XnView Software

I've reported through the software's built-in features. [Kolor-bd63b92e-f0c1-4ef4-a6b9-294c06ccfb1d]

XnView MP Windows
Version 0.93.1 64bits (Mar 6 2019)

Reproduce:

1. Create 3 control point in curves
2. Drag them out of the box in turn
3. The curve will disappear, and the software will crash.

Video:(Limited-Time Downloads)
https://1drv.ms/u/s!AGFzz3_4XoK_gtZb

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 0.94. Please check and confirm the bug fix here.