Why fruit drop take long to fall

I play level 1283, fruit level. 2 fruit drop 30 moves. First fruit ok, drop 23 moves left. Clear all obstacle and also make move under fruit drop, so it can drop. Fruit not drop at all. Only 3 move left then fruit drop.

No combination to make fruit disappear, but colour bomb. Good luck with colour bomb only reason why I pass level not using booster.

I replay level later and same happen again. First fruit drop 16 moves left. 3 Moves left fruit not drop yet. Next move fruit drop, now only 1 move left. No move possible for fruit to drop, but 3 colour bomb left, but require 3 moves. I lucky to have blue wrapped candy next to opening for fruit to fall, and 1 colour bomb next to random blue candy away from drop.

First explosion, fruit 1 candy away and next explosion fruit drop.

If no candy, then level is fail. Only way to possible win would be 2 or 3 free hand or lollipop.

Player like to know what sequence is for drop. It appear random and possible to loose level that way.