Glad to see you @DusX!
Thanks for your reply! Yes, it seems, that somehow we lost one of bug ticket. I have sent you new tickets (bug & feature req).
Yes. By "sequencer" I meant the one I have created in Isadora.
And Yes, you are right! It seems only asynchronous threads(scanning thumbnails & main process) could solve it. But any solution of this Issue would be great! Freezing is sucks! :))) (also when loading new "big video" in movie player)
Kindly ask you to made this improvements. Thanks!