@12_5 Hi, this is usually a problem with high dpi screens and sometimes with high resolution settings. You need to actually configure your operating system to let Pencil2D do it’s thing (this is a problem with the way the OS handles things and how Pencil2D works)
If you’re opening Pencil2D in a screen tablet please read the reply:
If you are using your screen monitor and a regulat pen tablet, read from point 2 onwards on the link above and visit the following FAQ link to follow a step by step solution for Hi-DPI monitors.