I am using OpenSuse Leap 15.1 and Mint 19.3 I am not sure if anyone else has the issue, I am reporting on what I see. The issue persists.
I believe I explained how I searched and I see you providing similar example of Coveo. I am not sure what Coveo has to do with MS Teams, perhaps they use the same search engine? As I explained before the problem for me appears only on my Linux desktops. Everything works fine for windows and android clients.
I am looking for the word squid and it doesn't show anything on linux, but in the web browser it shows 4 results which is correct.