Side mouse buttons doesnt work after this update

After today update my side mouse buttons doesnt work and I cant make them work. It works with no problem for years but now something goes wrong.
I use win 10 and my windows language settings is on ENG end Serbian(SRP). Till today all works no matter what language I choose. Now doesnt work.
My keyboard is QWERTY.
I saw in game setting and it looks new that we can choose language Eng or Ger. I try both but still cant make my side mouse buttons to work (its button 3 and 4)
Any tips or is this some kind of bug?

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