Tag not responding via UART anymore

our system is communicating with the DWM1001 in Tag mode via UART, fw2 fw_ver=x01030001.

The tag is enabled via “0x05, 0x02, 0x42, 0x04” (loc engine = on, uwb_mode = active, stationary mode = enabled).
UWB is disabled via “0x05, 0x02, 0x40, 0x04” (loc engine = on, uwb_mode = off, stationary mode = enabled).

Sometimes, and it is not clear to us exactly when or why, the module stops responding to any UART command, even after restart as if it is in some kind of corrupted state.
The only solution to this problem seems to be re-flashing the firmware.
Has anyone else experienced a similar behaviour?