I have got the same issue. I am left handed so i use plöä instead of wasd, right-shift to sneak, space to jump and AltGr to sprint. I've got a new Computer (also new keyboard) and it is still a problem. The most annoing thing is that with Ctrl + F3 + L you can "Reaload visible Chunks" (Can someone tell me what this is good for?). This couses Minecraft to crash almoast every time, and I often accidently hit it if I want to press F3 + B to show the hitboxes. Than I want to move, hit L because of my Controls, and the game crashes.
This is still a Problem in 1.15.2 with and without OptiFine.
Patzmini HD
I have got the same issue. I am left handed so i use plöä instead of wasd, right-shift to sneak, space to jump and AltGr to sprint. I've got a new Computer (also new keyboard) and it is still a problem. The most annoing thing is that with Ctrl + F3 + L you can "Reaload visible Chunks" (Can someone tell me what this is good for?). This couses Minecraft to crash almoast every time, and I often accidently hit it if I want to press F3 + B to show the hitboxes. Than I want to move, hit L because of my Controls, and the game crashes.
This is still a Problem in 1.15.2 with and without OptiFine.