The game crashes while using the fill or setblock command

Since the 1.16.210 update for Minecraft Bedrock Edition (I think it also effects Pocket Edition), everytime I use the /fill or /setblock commands, the game crashes before I can finish half of the command. When I type "/setblock ~ _{" or "/fill ~ ~ ~ ~ ~" and just as I type the last "}" in, the game stops responding and/or crashes.~

_{Please help!}