Same with me.
I use a mechanical keyboard Aula F75.
Temporary solution: Before a match I taped a button that I don't use - page up for example. As long as I don't let the keyboard sleep - it works without bringing up the scoreboard on the screen. If it accidentally sleeps /inactive for 30 seconds/ I peel off the button and stick it pressed again. Try it and hopefully Dice will fix the problem soon.
And to add - I also have a wireless keyboard and mouse - Logitech.... some cheap set purchased years ago - works perfectly with BF6 PS5.
Have the same keyboard and I use the included dongle with the ps5. I thought it might be a software issue with the keyboard, but it seems battlefield 6 is the only game to have an issue with this.
