Conversations involving multiple participants, allowing collaboration and information sharing in Teams
Yes, total fail on Microsoft's part. Program Manager needs to be assigned to remedial UX training. Chat list auto-hide needs to return with next update. Sooner if they realize what a huge fail it is. You guys have to do your complete testing cycles or, if it's considered a "new feature", whoever approved it should be demoted. Remember "The effective range of an excuse is zero meters."
Another trash Microsoft product. Have switched all personal PCs to apple unfortunately still stuck with MS garbage at work. Chalk up another failure for MS.