Inconsistent display of annotations

Hello for information
Here is a bug that prevents any organization of annotations.
In fact, the successive addition of several groups of annotations with several annotations in each group systematically leads to an anarchic organization of annotations. This bug occurs with the addition of enough annotations. (example with the search for successive tandem repetitions)
We then get:
-Mixtures of annotations from different groups within the same group.
Impossibility to add new annotations in a pre-existing group.
-Inconsistency between the display in the different tabs (visual under the sequence graph, tab on the right with the color legend and the tab at the bottom of the annotations [MyDocument_1.gb])
-Sometimes annotations disappear on the graphic representation but not in the annotations tab?

This problem seems to be deep because it lasts since several versions...maybe even since always...

Thanks for your help