I’ve found that the treeview, when scrolled all the way down, will block incoming mousewheel scoll’s when you close any of the items. This can be reproduced in the treeview demo. In order for it to work you have to resize the window so that it retains the scrollbar when having only 2 items open.
If you drag the scrollbar, it will again receive the mousewheel.
This is reproducible in both 1.53 and the git version.
If you manage to fix it, i’m curious about what exactly caused it. This is because i’m stuck to using 1.53 for now and need to incorporate any fixes to it.