This is a known issue, however, it won’t be fixed. Flights with aircraft with gear tilt flown prior to 24.3 will not have gear tilt in the replay due to the differences in server architecture between 24.3 and the previous versions.
To put it simply, the 24.3 replay viewer and replays prior to 24.3 are not fully compatible, and aircraft states cannot be fully decoded by the replay viewer.