#1127 pb in launching shell scripts from PCManFM in last Raspbian versions

[paul Terray]

Launching a shell script seems difficult in new versions of PCManFM (raspbian buster / PCManFM 1.3.1 , raspbian Stretch / PCManFM 1.2.5-4+rpi4) while it's working in lubuntu and older raspian versions (jessie).
See detailed simple tests for 5 situations (2 KO, 3 OK) on attachment, with details of packages used.
Migth come from bad usage with new versions, but I couln't find any information after many searches.
Thanks for your help. Paul.