I believe that if an Israeli club would ever qualify to the Final (and it would probably also apply for reaching the Quarter-Finals and Semi-Finals) of a continental competition, the governing bodies of Israeli football would do anything to help the club do their best, no matter what is required, so this is indeed a scheduling bug.
If I'm not mistaken, there are UEFA regulations that prevent local leagues being played on the same day of continental competitions, I wonder if there are any regulations regarding the days leading up to the final stages?
Regardless, I would imagine that the scheduling priority of the continental competitions should be set as higher than the local leagues, so I'm not sure that this is isolated to the Israeli competitions but should still be looked at nonetheless.