The first time one drag a layer in LayerNamePanel, two red drag bars are displayed (one below the source layer, one below the mouse).
After that, OpenJUMP behaves normally (only one drag bar).
I spent a lot of time trying to understand how drag bar is painted (using XORmode), but could not find a way to fix it.
It seems that the first paint operation performed during the first event of the first drag operation is not persistent : red line is not visible and when the second drag event arrives, the XOR operation draw a new line instead of cancelling the previous one.
I can't reproduce with r4365 on Windows with jre7 (64-bit). Test method:
- Start OJ
- Create 3 new layers
- Drag the second layer in the panel to a new location.
Result: Just one red line is displayed.
Still works for me, reopen if needed.