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From time to time breakpoint annotations disappear from the editor. Breakpoints are still working and hit, but the annotation is missing. See screenshot.
Created attachment 136963 [details] there is a breakpoint in this line, see breakpoints list at the left
It does NOT help to close and reopen the file
If I disable-enable the breakpoint, the annotation appears back
IMHO this is fixed by http://hg.netbeans.org/core-main/rev/e31643bbec8c and http://hg.netbeans.org/core-main/rev/bce8a8ccb74e. There was a race-condition in add/remove of annotations.