Sketchup 2019

Unfortunately, there are issues with the 20.1.xxx versions. Several users have reported this in various threads, f.ex.

For 2020 I have seen these versions:
20.0.363
20.0.373
20.1.229
20.1.235

The latest version available just now is apparently 20.1.235.
The 20.0.xxx versions appear ok, the 20.1.xxx does not. This is why some of us still clings on to 20.0.363 or 20.0.373.