When a strip is duplicated in the preview, it is not being locked. Unset flag `SEQ_IGNORE_CHANNEL_LOCK` for the duplicated strips. Pull Request: https://projects.blender.org/blender/blender/pulls/136848
When a strip is duplicated in the preview, it is not being locked. Unset flag `SEQ_IGNORE_CHANNEL_LOCK` for the duplicated strips. Pull Request: https://projects.blender.org/blender/blender/pulls/136848