Conversations involving multiple participants, allowing collaboration and information sharing in Teams
I'm happy to confirm that the fix for the left & right arrow keys issue is on track to reach public availability by end of June.
If you still reproduce the issue in July, please fully close and re-sign into Teams to help force a client refresh. We will continue to monitor this post and other feedback sources to measure the success of this fix which has already shown to be effective in our development rings.
We understand this has been a pain point for a long time and appreciate the community coming together to alert us to it as well as collaborate on possible root causes until we found the right one.