Custom panel not docking and seen outside the Premiere pro

[mikel3179860]

On launch the panel is seen outside as a separate window and cannot be dragged back into the Premiere Pro application. No error log is seen for the extension loading. Seen on Windows 10/8.1/7. If this panel which is popping out is closed, it does not persist.

This is how it is seen in the task manager.

See similar behaviour as discussed in this thread - Demo panel loading undocked with no surrounding window

[mikel3179860 · Accepted solution]

Looks like my extension had an error, that is the reason it was not docking. Thanks. your video helped.

[mikel3179860]

It does not work though when I set the pref to open the last opened document on launch. When I do that the panel pops out of the app. I do not see any error in the panel extention. Any thoughts?