Why can I no longer break into doors in Deus Ex?

This time, the game does work, but I can't break into doors. I could only do it twice, once with a 10mm gun and the other with the crowbar. Now when I have the option to break into a door, the health doesn't decrease not even when I attack it with my crowbar.

The doors weren't 100% buggy, though. I had the option to lockpick the doors, but I can't do it due to the lack of lockpicks in my inventory.

I am aware that there are doors which you can't break into (those with INF HP), but the others with limited door resistance should be allowed to be broken into. I made sure that the door I was breaking into wasn't an INF one, so I have no idea why I can't break into doors now.

TL;DR, I can lockpick doors, but not break into them.

Side note: I looked at this question here: What damages doors?, however, this did not help, as I tried to break into them with some of the methods. I'm in the "Hell's Kitchen" level, so explosives aren't an option, at least from what I could see.