BUG : Layers disappear from layer Panel

[darkworks]

Am facing one strange issue , its just that when i load few gerbers to gerbv and when try to hide and show them by checking and unchecking during analysis then some time the layers fully disappear from the panel. i do not know full process to reproduce this bug , it happen to my quite often

i have our four gerbers loaded when i hide two of them then all disappeared from the panel u can see no layers is visible in the panel

now to fix the issue i would have to drag one another gerber and then it will become visible

i think it occur when u click on edges of layers in panel

so please fix this issue am using latest version 2.10 on windows 10.

thanks