Merge branch 'feature-s/3621-no_fuse_empty_set' into 'dev'

file.py task.py a some fuse failsafes.

Closes #3621

See merge request !359
5 jobs for dev in 6 minutes and 20 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test Tools
passed #206350
test_tools

00:00:06

 
  Test Quality
passed #206351
web
code_quality

00:00:10

 
  Test Unit
passed #206352
web
test_browser_unit

00:00:11

passed #206353
web
test_server_unit

00:00:23

 
  Test Functional
passed #206354
docker x86_64
test_server_functional

00:05:29