I have randomized breaks setup but whenever I am using a fighter script for example Czar's Sand Crabs or Glorious TzHaar it doesn't break because of in combat and it doesn't re-try the logout once combat's finished.

Is there some sort of way to pause the script when the break should be active?

I think this is an internal part of the script, rather than the client. For example, in Czar's AIO fighter, it can run to a certain area and prepare to break for a few mins before the break starts.

Combat scripts should really implement a mechanic which caters for breaking (As an example, in APA Sand Crabs, the script will walk the player to a safe place 2 minutes before a break starts to ensure a successful logout).

I'd suggest letting the script writers know and they can advise you further

Apa

Appreciate the comments, Czar's script does have a breaker setup. After giving it second thoughts the internal breaker is more for skilling purposes I'd reckon