diff --git a/chrome/content/zotero-platform/win/overlay.css b/chrome/content/zotero-platform/win/overlay.css
index 464090cbc..b90ec7c58 100644
--- a/chrome/content/zotero-platform/win/overlay.css
+++ b/chrome/content/zotero-platform/win/overlay.css
@@ -78,6 +78,11 @@
 	border-width: 0 1px 1px 0;
 }
 
+/* Restore row highlighting on drag over, though I'm not sure how we're losing it to begin with. */
+#zotero-collections-tree treechildren::-moz-tree-row(dropOn) {
+	background-color: Highlight;
+}
+
 #zotero-items-tree {
 	border-width: 0 1px;
 }
diff --git a/chrome/content/zotero/xpcom/itemTreeView.js b/chrome/content/zotero/xpcom/itemTreeView.js
index 23e1ac159..6b0c8de16 100644
--- a/chrome/content/zotero/xpcom/itemTreeView.js
+++ b/chrome/content/zotero/xpcom/itemTreeView.js
@@ -2558,7 +2558,7 @@ Zotero.ItemTreeCommandController.prototype.onEvent = function(evt)
 Zotero.ItemTreeView.prototype.onDragStart = function (event) {
 	// See note in LibraryTreeView::_setDropEffect()
 	if (Zotero.isWin) {
-		event.dataTransfer.effectAllowed = 'move';
+		event.dataTransfer.effectAllowed = 'copy';
 	}
 	
 	var itemIDs = this.saveSelection();
@@ -2896,7 +2896,7 @@ Zotero.ItemTreeView.prototype.canDropCheck = function (row, orient, dataTransfer
 	
 	var itemGroup = this._itemGroup;
 	
-	if (orient == 0) {
+	if (row != -1 && orient == 0) {
 		var rowItem = this._getItemAtRow(row).ref; // the item we are dragging over
 	}
 	
@@ -2904,7 +2904,7 @@ Zotero.ItemTreeView.prototype.canDropCheck = function (row, orient, dataTransfer
 		var items = Zotero.Items.get(ids);
 		
 		// Directly on a row
-		if (orient == 0) {
+		if (rowItem) {
 			var canDrop = false;
 			
 			for each(var item in items) {
@@ -2981,7 +2981,7 @@ Zotero.ItemTreeView.prototype.canDropCheck = function (row, orient, dataTransfer
 	}
 	else if (dataType == "text/x-moz-url" || dataType == 'application/x-moz-file') {
 		// Disallow direct drop on a non-regular item (e.g. note)
-		if (orient == 0) {
+		if (rowItem) {
 			if (!rowItem.isRegularItem()) {
 				return false;
 			}
diff --git a/chrome/content/zotero/xpcom/libraryTreeView.js b/chrome/content/zotero/xpcom/libraryTreeView.js
index 0bb15fe16..701334794 100644
--- a/chrome/content/zotero/xpcom/libraryTreeView.js
+++ b/chrome/content/zotero/xpcom/libraryTreeView.js
@@ -197,20 +197,25 @@ Zotero.LibraryTreeView.prototype = {
 	
 	
 	_setDropEffect: function (event, effect) {
-		// On Windows (in Fx26), Firefox uses 'move' for unmodified drags,
-		// and 'copy'/'link' for drags with system-default modifier keys,
+		// On Windows (in Fx26), Firefox uses 'move' for unmodified drags
+		// and 'copy'/'link' for drags with system-default modifier keys
 		// as long as the actions are allowed by the initial effectAllowed set
 		// in onDragStart, regardless of the effectAllowed or dropEffect set
-		// in onDragOver. To prevent inaccurate 'copy'/'link' cursors, we set
-		// effectAllowed to 'move' in onDragStart, which locks the cursor at
-		// 'move'. ('none' still changes the cursor, but 'copy'/'link' do not.)
+		// in onDragOver. It doesn't seem to be possible to use 'copy' for
+		// the default and 'move' for modified, as we need to in the collections
+		// tree. To prevent inaccurate cursor feedback, we set effectAllowed to
+		// 'copy' in onDragStart, which locks the cursor at 'copy'. ('none' still
+		// changes the cursor, but 'move'/'link' do not.) It'd be better to use
+		// the unadorned 'move', but we use 'copy' instead because with 'move' text
+		// can't be dragged to some external programs (e.g., Chrome, Notepad++),
+		// which seems worse than always showing 'copy' feedback.
 		//
-		// However, since effectAllowed is enforced, leaving it at 'move'
-		// would prevent our default 'copy' from working, so we also have to
-		// set effectAllowed here (called from onDragOver) to the same action
-		// as the dropEffect. This allows the dropEffect setting (which we use
-		// in the tree's canDrop() and drop() to determine the desired action)
-		// to be changed, even if the cursor doesn't reflect the new setting.
+		// However, since effectAllowed is enforced, leaving it at 'copy'
+		// would prevent our modified 'move' in the collections tree from working,
+		// so we also have to set effectAllowed here (called from onDragOver) to
+		// the same action as the dropEffect. This allows the dropEffect setting
+		// (which we use in the tree's canDrop() and drop() to determine the desired
+		// action) to be changed, even if the cursor doesn't reflect the new setting.
 		if (Zotero.isWin) {
 			event.dataTransfer.effectAllowed = effect;
 		}
diff --git a/chrome/content/zotero/xpcom/translation/translate.js b/chrome/content/zotero/xpcom/translation/translate.js
index 888cd44f8..d895ef404 100644
--- a/chrome/content/zotero/xpcom/translation/translate.js
+++ b/chrome/content/zotero/xpcom/translation/translate.js
@@ -344,6 +344,7 @@ Zotero.Translate.Sandbox = {
 					if(!Zotero.Utilities.isEmpty(sandbox.exports)) {
 						sandbox.exports.Zotero = sandbox.Zotero;
 						sandbox = sandbox.exports;
+						if(Zotero.isFx && sandbox.wrappedJSObject) sandbox = sandbox.wrappedJSObject;
 					} else {
 						translate._debug("COMPAT WARNING: "+translation.translator[0].label+" does "+
 							"not export any properties. Only detect"+translation._entryFunctionSuffix+
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 4ede8e264..ffe902654 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1494,7 +1494,8 @@ Components.utils.import("resource://gre/modules/osfile.jsm");
 			locale = locale.match(/^[a-z]{2}(\-[A-Z]{2})?/)[0];
 			var collator = new Intl.Collator(locale, {
 				ignorePunctuation: true,
-				numeric: true
+				numeric: true,
+				sensitivity: 'base'
 			});
 		}
 		catch (e) {
@@ -1508,10 +1509,44 @@ Components.utils.import("resource://gre/modules/osfile.jsm");
 			};
 		}
 		
+		// Grab all ASCII punctuation and space at the begining of string
+		var initPunctuationRE = /^[\x20-\x2F\x3A-\x40\x5B-\x60\x7B-\x7E]+/;
+		// Punctuation that should be ignored when sorting
+		var ignoreInitRE = /["'[{(]+$/;
+		
 		// Until old code is updated, pretend we're returning an nsICollation
 		return this.collation = {
 			compareString: function (_, a, b) {
-				return collator.compare(a, b);
+				if (!a && !b) return 0;
+				if (!a || !b) return b ? -1 : 1;
+				
+				// Compare initial punctuation
+				var aInitP = initPunctuationRE.exec(a) || '';
+				var bInitP = initPunctuationRE.exec(b) || '';
+				
+				var aWordStart = 0, bWordStart = 0;
+				if (aInitP) {
+					aWordStart = aInitP[0].length;
+					aInitP = aInitP[0].replace(ignoreInitRE, '');
+				}
+				if (bInitP) {
+					bWordStart = bInitP.length;
+					bInitP = bInitP[0].replace(ignoreInitRE, '');
+				}
+				
+				// If initial punctuation is equivalent, use collator comparison
+				// that ignores all punctuation
+				if (aInitP == bInitP || !aInitP && !bInitP) return collator.compare(a, b);
+				
+				// Otherwise consider "attached" words as well, e.g. the order should be
+				// "__ n", "__z", "_a"
+				// We don't actually care what the attached word is, just whether it's
+				// there, since at this point we're guaranteed to have non-equivalent
+				// initial punctuation
+				if (aWordStart < a.length) aInitP += 'a';
+				if (bWordStart < b.length) bInitP += 'a';
+				
+				return aInitP.localeCompare(bInitP);
 			}
 		};
 	}