Fireworks contract loop and can't remove

Fireworks contract stuck in a repeating loop when you complete all of its difficulty levels and then it resets to Easy.Also it seems impossible to delete this contract form the offerings board.note1: I unlocked rocket parts after land RC vehicles.note2: I have a lvl 2 manager upgrade.How to reproduce (full traceback):1. Unlock land contracts before rockets.2. Complete some missions to get lvl 2 manager and entry level rocket parts3. Complete fireworks contracts to see if they will loop back to easy after the last one.4. Try to remove fireworks contract from the boardp.s. sry for unrelated thumbnale