cannot switch to a different thread issue in pipelines
Observed here: https://gitlab.esrf.fr/bliss/bliss/-/jobs/116185 , test: test_scan_watch_data_set_callback_to_test_saferef
Observed here: https://gitlab.esrf.fr/bliss/bliss/-/jobs/116185 , test: test_scan_watch_data_set_callback_to_test_saferef