Why is in this loop memory leak?

[Petr]

I downloaded QB64pe 64 bit 3.6.0 and I have the same memory leak as before. I found that it takes far less hardware images to function properly (my computer's limit is 100 x 100), I don't know if it's the RAM size or the video memory size. If I oversize the field to 100,100, the size stays at the same size and there is no leakage. Interestingly.

@mnrvovrfc 
33 is correct there, I had an idea, but it could not be implemented in the intended way. I have to work around it.