Snow accumulation indicator error

[Fian2009]

Snow accumulation error...
This bug is appearing randomly, but usually after setting a new accumulation time / set zooming / or clicking a random region after dragging the flag (which was behaved normally). The pattern is "work normal - set new zoom / accumulation time / re-click a region - drag the flag - abnormal behavior". Thanks for your concern.

[TomSlavkovsky]

@Fian2009 thank you, will check.