When repeated LIST commands are issued on the same block number, after between half a dozen times and a dozen times, display halts for a short time while printing the block and the next time o some time later freezes completely, requiring restart.
When EMTPY-BUFFERS is issued before each LIST it neither halts nor freezes.
ESP32forth v7.0.7.20 Revision: c5ac9b0 on ESP32C3 Dev Module esp 2.017