You are a patient man, if it does not work reliably out of the box, I would definitely be returning it. Crashing during daily use is a firm trigger to return, it is such a hit on productivity. You have no idea how long it will take for them to fix it.
In my experience, Rigol’s maturity when it comes to managing firmware is juvenile. I hope they will release update to address the bugs, but why torture yourself in the time being. As Martin72 has stated, there are options.
I have a Rigol scope, it was my first, and also my last Rigol purchase. Siglent I may buy again, I have nothing against them, they are much more mature when it comes to firmware.