I've used this bot on Telegram's desktop version, and it works smooth. I've got a question, if I use the 'Ignore User' feature and input User X but also turn on the Tracked Topics feature, say for topic Y, if User X posts on topic Y, will I still get notifications?
No. You'll never get a notification from an ignored user.
Logically, no one who is going to ignore someone will do this, but:
Imagine that I have a user being "followed" by the bot. And later I "ignore" the user on the forum, what will the bot do? Or I "ignore" a user on the forum, and then it comes to the bot and I request to "follow" that user, how does the bot react?