#840 Posting to a thread or starting a thread should subscribe me to that thread by default

[DDD]

If I start a thread or post to a thread, it should subscribe me to that thread by default. This used to happen until sometime like 2019 but then stopped. Now, I have to manually check the thread that I just posted to. See, here in this ticket creation page, "subscribe to this ticket" is on by default. That is how it should be when I start a thread or post to a thread, so that everyone doesn't have to always
@ me in order to get my messages or they mine.