This bug began happening maybe a month ago when I select a text layer intending to change the font. When I go to the Character panel and start typing the name of the new font, the first letter of the new font entered disappears. For example, I want to change Mulish to Open Sans - when I begin typing Open for the font to show up in the Character panel list it cuts off the "O" and only reads as "pen". So the font search jumps to fonts beginning with P or has the word "pen" in it. If I continue typing the name of the font eventually it will figure out that I meant Open and it will jump directly to the correct font.
I've gotten around this for now by typing the first letter of the font twice "oopen" because the first letter will inevitably disappear.
Running current updated version of PS on iOS Sequoia 15.5 on Macbook Pro.