System Information
Operating system:win10
Graphics card:

Blender Version
Broken: 3.3LTS

Short description of error
Using the pen tool will make the line a point
Exact steps for others to reproduce the error
No steps can be provided, but you can be sure that this is a new issue that I raised yesterday after I provided"About the Y-axis scaling 0 loss of thickness[[ https://developer.blender.org/T101530 | name ]]".
Provide a blend file and maybe see what's going on.
Current known workarounds: you can avoid the problem by copying the current file as a whole to a new file{F13606180}