Weird mosaics appear in scene textures

[Online_Learner_fowfr]

Sometimes when I open the scene, the texture changes color inexplicably. Is it a problem of insufficient memory?

[ClockworkOcean]

You’ve run out of VRAM, you’re probably getting messages about it.

A restart of the editor will fix it

[Online_Learner_fowfr]

Thank you for your answer