bedrock realms chat and map upload bug

There are currently several bugs in Bedrock Realms. First, uploading a large map to a realm throws an error. Random maps are uploaded with "survival mode" and "no cheats allowed", not my uploaded maps. When the size of the map is small - ex) 15MB - there is nothing wrong with uploading it. Second, there is an error with late sending when chatting as usual in realms. If a member writes "/me , /w and /msg" before the words they want to chat, no error occurs. However, it is cumbersome to write "/me" every time the members chat. 

These errors didn't exist when I created the realm earlier this year. Fixing these bugs is very urgent. I would appreciate it if you could reply as soon as possible.