Paintstormstudio.com

Thank you for the wonderful software.
Changing the opacity with Hotkey has unexpected results in the opacity of the custom panel.
(The screen was recorded as a gif animation)
However, there is no problem if the brush panel is displayed.
First image.
Displays the Brush panel. no problem.
Second image.
Hide the brush panel. Unexpected value for opacity.

I set the opacity on the numeric keypad, and when I clicked on it, the opacity value became -214748.
I can't move the opacity slider until I restart the app.
-214748. This is the same invalid value as for "September 29, 2019, 19:41".