diff --git a/chrome/content/zotero/elements/editableText.js b/chrome/content/zotero/elements/editableText.js
index 9abc466edb..efd3af9448 100644
--- a/chrome/content/zotero/elements/editableText.js
+++ b/chrome/content/zotero/elements/editableText.js
@@ -260,24 +260,25 @@
 				input.addEventListener('dragover', (event) => {
 					// If the input is not focused, override the default drop behavior
 					if ((document.activeElement !== this._input || Services.focus.activeWindow !== window)
+							&& !this.readOnly
 							&& event.dataTransfer.getData('text/plain')) {
 						event.preventDefault();
 						event.dataTransfer.dropEffect = 'copy';
 					}
 				});
 				input.addEventListener('drop', (event) => {
-					let text = event.dataTransfer.getData('text/plain');
 					// If the input is not focused, replace its entire value with the dropped text
 					// Otherwise, the normal drop effect takes place and the text is inserted at the cursor
 					if ((document.activeElement !== this._input || Services.focus.activeWindow !== window)
-							&& text) {
+							&& !this.readOnly
+							&& event.dataTransfer.getData('text/plain')) {
 						event.preventDefault();
 						document.activeElement?.blur();
 						// Wait a tick to work around an apparent Firefox bug where the cursor stays inside the old
 						// input even though the new input becomes visually focused
 						setTimeout(() => {
 							this.focus();
-							this._input.value = text;
+							this._input.value = event.dataTransfer.getData('text/plain');
 							handleInput();
 						});
 					}