@mitu i updated the firmware to the latest release v1.36 and tested the result yesterday evening.
A step forward: the pad does now work perfect when it is connected wireless.
As soon as i use it wired the strange behavior returns :)
But in the end i can live with that, i now can finally try all the games that do not show up importent text in "lr-ppsspp".

@sirhenrythe5th said in PPSSPP menu showing text:

I use it wired most of the time as my cats disturb the Bluetooth connection by sitting on my lap (no joke :D)

Your cats are radio-active :)