Currently, when you select another pattern, it becomes the playback pattern after the previous pattern ends.
Here's what it could look like with this proposed feature:
Create a longer pattern that represents the entire loop you want to work on.
Lock that as the playback pattern (visually indicated somehow).
Start playback.
Switch between other shorter patterns and edit freely; playback looping will remain locked to the longer pattern.
The same scenario could also be used to loop a shorter section of a longer pattern.
Allow locking pattern used for pattern playback
Re: Allow locking pattern used for pattern playback
yes please! or feature for setting sequencer's start/end to loop, without using a pattern