On 2.0.107.0 the problem still exists. It´s so annoying. Now the weather is getting warmer and there will be so many connection problems outside again.
I found a solution with my Asus WiFi (deactivate WiFi 6, deactivate beamforming) but with that settings all 2,4 GHz Xiaomi devices (smart hubs, speakers,...) get problems.
Edit: I just sold the Xiaomi 14 and bought an Oppo Find X8s, because I was reading about the same WiFi problems with Xiaomi 15 again. That´s so annoying. Actually i wanted to buy a Xiaomi 15.