Well TU31 was great with everything new and no game crashes. I guess that you tested TU32 because that did not crash.
However TU33/CU21 on the Xbox one crash again. It was before TU31 about 5 hours, now it seams to be 9 hours. I continue to test how long and get back to you. I tried creative with doing seed exploring and the game crash as I try to clear the map. I explore maps with mesa, ice-spikes and jungle.
So I have now completed the test of how long it takes before the game crash. Using a new world created in TU33 building, a pillar to stand on and waiting for 48 hours, the game crashed and returned to Xbox one game start environment. Time until crash doing nothing is 48 hours about with the new update TU33/CU19.
Since the crash in survival has the duplication effect on items plus or minus and loss of builds corrupted maps. Please revert or fix as soon as possible.
I do hope that you test more before release of updates.