Drag and Drop feature stuck when mouse-over to quickfolders tab

[jeffcheung1125]

When drag and drop a email to quickfolder tab, stuck and freeze on the first mouse-over tab item and never come back. This lead to the move email function simply not working. Also, I cannot click browse the tab (folder) if it is not in the lowest level. This is simple not reasonable as there may be emails in that tab/folder.

This problem has been held for long and currently quickfolder is simply useless if those problem cannot be solved in the short time.

[RealRaven2000]

It's a known bug of Thunderbird 149 - the easiest way to avoid it is to update to Thunderbird 150.

this is the same bug that also caused these two on MacOS + Tb 149: #658, #659

apparently there is a setting that has enabled "native menus" which causes the problem. it can be set through Thunderbird Settings » General » Config Editor and then setting

widget.macos.native-anchored-menus = false