why does the program draw horizontal stripes when taking a long screenshot?

[iv65146-crypto]

why does the program draw horizontal stripes when taking a long screenshot?

[iv65146-crypto]

[xland]

This is a known issue, and there isn't a proper fix for it just yet.
You can work around it by simply adjusting your screenshot area.
For example, try to avoid including the window's title bar and status bar in the capture.