This indeed looks like what i’m experiencing, thanks for taking the time to take these photo’s!
I was allready fearing it was a limitation of the built in hardware at the moment. In principle it works fine like this, but for new users (at least the people i test with) it sometimes seems that the buttons don’t work, because they tend to ‘look for the edges’.
Use of the finger position as input might be an option, although that has its own disadvantages because my target demographic likes clicking functionality better than touch. I Guess i’ll have to try that.
Thanks again for your elaborate answer!