Smooth operation when changing the size of the panel of colors and layers.

1) Summary: Smooth operation when changing the size of the panel of colors and layers. 2) Description: The application does not run smoothly when changing the width of the colors and layers bar. 3) Environment: Windows 10 x64, Build 18362.720, Version 1903 LazPaint 7.1.6, 64-bit 4) Steps to reproduce

Place the cursor on the left edge of the Colors and Layers panel
hold down the left mouse button
Move cursor from right to left and back

5) Expected behavior Smooth application work. 6) Actual behavior the application does not run smoothly. 7) Attachment:

https://user-images.githubusercontent.com/94738204/142758815-84ebc64c-29d6-49d6-8b1b-d556eb13eb70.mp4

8) Severity - Minor 9) Priority- Low

bgrabitmap / lazpaint

Smooth operation when changing the size of the panel of colors and layers. #432