SSD1322: Python 3.7 to 3.9-3.11 upgrade fail

[majuss]

Hi guys, I'am in the process of upgrading my project from Python 3.7 to 3.9 but the Luma.oled library is spazzing out.. In the attached picture you see a scrolling text. With 3.7 everything works fine but with Python 3.9 the scrolling text is completely broken. Minimal static examples all work.

RPI 3B+
5.4.79-v7+
Version: luma.oled 3.8.1 (luma.core 2.2.0)
Python3.9.1 completely fresh venv

Package                          Version
-------------------------------- ---------
Adafruit-Blinka                  5.9.1
adafruit-circuitpython-bme280    2.5.1
adafruit-circuitpython-bme680    3.3.0
adafruit-circuitpython-busdevice 5.0.1
Adafruit-GPIO                    1.0.3
Adafruit-PlatformDetect          2.23.0
Adafruit-PureIO                  1.1.8
cbor2                            5.2.0
certifi                          2020.12.5
chardet                          3.0.4
Cython                           0.29.21
dbus-python                      1.2.16
Deprecated                       1.2.10
idna                             2.10
luma.core                        2.2.0
luma.oled                        3.8.1
mock                             4.0.3
pi-ina219                        1.3.0
pi-rc522                         2.2.1
Pillow                           8.0.1
pip                              20.3.2
pycairo                          1.20.0
pyftdi                           0.52.0
PyGObject                        3.38.0
pyserial                         3.5
python-lirc                      1.2.3
python-mpv                       0.5.2
pyusb                            1.1.0
requests                         2.25.0
rpi-ws281x                       4.2.5
RPi.GPIO                         0.7.0
setuptools                       49.2.1
smbus2                           0.4.0
spidev                           3.5
sysv-ipc                         1.0.1
urllib3                          1.26.2
wheel                            0.36.2
wrapt                            1.12.1
xmltodict                        0.12.0

Expected behaviour

Scrolling text without artifacts. Code can be found here: https://github.com/majuss/wladio/blob/master/radio/display.py

Actual behaviour

Scrolling text with haevy glitches.

The runner example is also broken, if I don't stretch it across the whole screen.

I will update this issue with my findings.