Hi,
I'm using a st7789 display which is 135x240. It is this one https://www.adafruit.com/product/4393
Using your examples with the following parameters to test it:
python3 bounce.py --display=st7789 --interface=spi --spi-bus-speed=52000000 --gpio-data-command=25 --gpio-backlight=22 --backlight-active=high --width=240 --height=135
I can get the screen to display but part of the image is moved off to the top and left. See attached image.

I tired using --h-offset and --v-offset with different values but it does not seem to make a difference.
On other drivers, you normally specific the following offsets: offset_left=40 offset_top=53
I not sure how to get the display to align correctly??