The lines appear normal at 68% zoom. However, when I zoom out to see the full page, some lines disappear. This issue becomes more pronounced when zooming out below 68%. The more you zoom out, the higher the chance that lines will disappear. All the lines are dark grey and have a thickness of 1. This issue is easy to recreate by zooming out.
The text also has a similar issue. It looks slightly strange when zooming out, although this is less noticeable compared to the line problem.
Example of lines disappearing and text weird(49% zoom)
Looks normal at 68% zoom