Conversations involving multiple participants, allowing collaboration and information sharing in Teams
When Teams gets stuck in this mode the cursor keys do still work, but the behavior is altered:
LEFT/RIGHT : no response (unusual behavior)
UP/DOWN : go up/down to the start of the next line (put a LOT of text into a chat box to see what I mean) (unusual behavior)
CTRL+LEFT/CTRL+RIGHT: jump left and right to the start of the prev/next word (normal behavior)
SHIFT+LEFT/SHIFT+RIGHT: select one character at a time, going leftwards or rightwards (normal behavior)
CTRL+SHIFT+LEFT/CTRL+SHIFT+RIGHT: jump one word at a time, selecting as you go (normal behavior)
..so, the cursor is capable of moving left/right one char at a time, but only when you're holding SHIFT, which isn't much use because you can't clear the selection. You might as well use CTRL+LEFT/RIGHT followed by BACKSPACE/DELETE and retype the word you want to change :/