Comment 8 for bug 1795668

This "enhancement2 broke all my thumbnailers too; unfortunately they are quite a bit more complex than the one @eros2 commented.

Is there any instruction on how enabling back a personal script for thumbnails generation after the upgrade? Note that this has been noticed by users; see for example https://askubuntu.com/questions/1088539/custom-thumbnailers-don-t-work-on-ubuntu-18-10

Thanks!