No parts move anymore

Hello while i was working a a project, all of a sudden no parts can be move anymore. Not a single one. Closed and reopened pc, cuabse. project…no way, i open and no parts can be moved. There is no lock on tracks…
I have tried to creatre a new project and import tracks…and again nothing can be moved

What can have happened?


Did you lock them? Or the tracks? Or did you freeze the tracks?

no as i said no lock or freeze
but…i create a new instrument tracks and everyhting works again!
really weird thing