Details:
The collapsed “Folders List” on the left-hand side duplicates items every time conversations are enabled/disabled. The onMouseOver tooltips are also too slow to disappear, however I don’t think this is related to this particular bug.
This occurs whether enabling/disabling conversations from [Menu > View > Conversations] or from [Menu > Settings > Mail > Read > Conversations].
Steps to reproduce:
1) Collapse left “Folders List” pane.
2) Go to [Menu > Settings > Mail > Read > Conversations]
3) Select “Disable conversations”.
4) Select “Apply” to apply the setting. The icons in the collapsed “Folders List” are incorrectly duplicated.
5) Select “Show conversations in all views”.
6) Select “Apply” to apply the setting. The icons in the collapsed “Folders List” are incorrectly duplicated again.
7) It will keep duplicating every time conversations are enabled/disabled.
Screenshot A (normal view):
Screenshot B (after conversations have been enabled/disabled a few times):
Windows 10 - 21H2 (19044.1826)
eM Client - 9.1.2052 (77bce8f)