webp viewing/thumbnailing eats up memory

[bjung1970]

Distribution

Mint 20.1

Package version

2.6.3

Frequency

Always

Bug description

Thumbnailing or viewing a few (~40) webp files (size ~3000x4000 pixels) one after the other eats up memory, especially viewing that always leads to system swapping hell. 'top' indeed shows always increasing memory usage (2-3 Gb in my case before system freezes for a few minutes).

Steps to reproduce

Just display webp files, memory usage always increases. System finally freezes; the bigger the files the faster the problem shows, depends how much RAM you have obviously.

Expected behavior

Memory used for displaying a webp file should be freed before displaying next file.

Additional information

No response