There are always exceptions to the rule. I think with squash the most important thing is to cleanup before you push. Squash what should be squashed but never squash with something that has already been pushed.
Especially not after a (first) review/change-request! When you're rewriting history, I need to do over my entire review. Instead of just checking the changes since last the time.
I like the, add commits after review point. I intend to make the merge request a work in progress at that point and rebase when the review is complete.
My comment on squash was because gitlab can make every merge request squash before merge automatically.
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