XnView Software

mmm, you are right, im trying now with 1.7.1 and its the same i didnt notice probably because i usualy drag the mouse to up and left direction in which case there are no artifacts but in other directions there are

so its a regression there wasnt such issue in version 1.7.1

OS: Windows 11 24H2

XnView shows artifacts while selecting images and images selection lags

To reproduce:
1. select images with mouse

Expected behaviour: No artifacts, no lags

video