Update to my previous post: the situation is more complex. Sometimes the spinning svg is being shown, sometimes only a seemingly random counter (xxx messages) is being displayed, although the list panel is empty and shows only "no messages found". Af...
In 140.8 the issue still exists. Maybe it could be introduced that at least the prominent display "no messages found" is not being shown until the search is actually finished. Some folders of mine are really large and the search is exceptionally slow...
