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When using Mustang, often pressing Right Arrow in the tree view (Ocean L&F) does not expand the node. It will expand the node eventually if you keep on pressing it. Very annoying.
I think you already file the same issue some time ago: issue 51826. But as the bug says it is already fixed in b48. So probably INVALID.
Ah, thanks, I had forgotten where it was... I file so many bugs. :-) *** This issue has been marked as a duplicate of 51826 ***
v/c