Automatically closed - issue fixed for 2 weeks with no activity.
If the form is rebuilding the status messages have not and should not be set (or removed) yet. Add $form_state->isRebuilding() condition on submit handler to prevent premature display or removal of status messages.
Fixed
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Automatically closed - issue fixed for 2 weeks with no activity.