Plugin editor window slow to open (since JUCE 6.1 possibly?)

[Toddler-Boy]

Maybe this is of relevance?

Bug with TreeView in JUCE 6.1.2 (performance)

We recently updated from JUCE 6.0.7 to JUCE 6.1.2. After the upgrade we noticed, that our TreeViews suddenly had very bad performance, when adding new nodes. Things that took only a split second with JUCE 6.0.7, suddenly took several seconds in JUCE 6.1.2. Our scenario is the following: We have a TreeView, with one root node, which contains a LOT of children (approximately 1000 children). And the children are added to that that tree during run time (while the TreeView is already open and visi…