Code::Blocks: 20.03
Build: 2020-04-18, 19:47:24 - wx3.0.4 - gcc 9.3.0 (Linux, unicode) - 64 bit
However, I've already installed wx3.1.3 (following this page
https://wiki.wxwidgets.org/Compiling_and_getting_started).
EDIT: Actually, the windows do dock in the "wxAUI Sample Application" however, they show no sign what so ever that they are ready to be docked, ie. no graphical heads up that says "hey, you can drop it now". However again, they dock with the same problems I'm having already, which is that it is VERY picky on where to drop it and sometimes they are still placed in the wrong spot. Almost everything from my last post still seems to be identical, with the exception of no graphical heads up on when/where to drop and in the "wxAUI Sample Application" I have a strange option of vertically maximizing windows, which isn't present in C::B (read below if you care about that). The problem of grabbing to resize docked windows isn't present in the sample app,
If I undock "Text Pane with Hide Prompt", I can get it to maximize vertically on the left or right of the screen, but not in the main window, just on top of it. The undocked window maximizes to full height, with ~1/3 width, however, it won't do this at the bottom or top of the "wxAUI Sample Application" window only on the sides, so the "Text Pane..." stays floating. Also, it won't maximize like this at all if I undock with the main window ("wxAUI Sample Application") maximized, just when it's not maximized/fullscreen. When it's full screen nothing will maximize at all and all windows are permanently floating.
So, with the "wxAUI Sample Application", I can only vertically maximize undocked windows when the main window isn't maximized.