Adding to the original list, here are some more paper cuts with Dialogs and default/escape actions:
7. OK/Close is not default, escape does not close the dialog
select target dialog
file properties
project properties
manage plugins
settings environment
settings editor
settings compiler
settings debugger
settings global variables
8. Escape key does not close the dialog
project build options
file print dialog
add todo item dialog
replace prompt (despite setting SetEscapeId in the constructor)
browse tracker settings (from edit menu)
categories & file types
project remove files
9. too large for small screens
all(?) file picker dialogs (e.g. file open, file save as, project add files, ...)
10. broken layout
settings global variables (need to scroll dialog, probably just missing a layout/fit call)
This is on Linux, not sure there are the same problems on windows. Let me know if I have misdiagnosed or miss some issues. The fixes for 7 and 8 may not be straightforward because they may be due to bugs in wxWidgets.