Good evening !
I have been able to reproduce the problem:
Step 1: Open several "sql" and "plsql" files in several tabs of the same editor
Step 2: Open a PLSQL file (Example procedure.prc)
Step 3: Move the last tab and place it on the left. Until now everything is correct.
Step 4: Go to any "sql" tab and the "Desktop SQL" will have been deconfigured
Screens with configuration other than DESKTOP SQL and PLSQL
Screens showing the deconfiguration of DESKTOP SQL