1.6.0b - viewer - selection starts when clicked outside context menu

[user0]

XnViewMP 1.6.0b 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Viewer
selection starts when clicked outside context menu

To reproduce:
1. run clean portable XnViewMP
2. open any image in viewer
3. right click to invoke context menu
4. left click at any place on the image outside context menu
selection will be initiated under cursor (image area will dim as well)

there is no such issue in 1.5.5

[xnview]

right will be fixed

[user0]

fixed in 160