[vdb86]

Sure, it's 1920x1080.

I'm using Kodi for Windows on my 1920x1080 laptop.
Let me know if you need anything else.

Edit:
In the past I was using this screensaver similar to yours: https://github.com/brantje/screensaver.clock , with the bounce option. The clock stayed within the screen. Maybe it can be of some help.

I have just checked the whole thing again on both my laptop (windows 7) and TV (OSMC running Kodi) and I can't reproduce this.
There is a special part in the code which limits the position itself, I can't figure out how the text can move outside those boundaries.
Have you changed anything in the code or the xml?
Are you using the current version?
What happens if you chose Bounce option, does it go outside of the screen too?
Is that resolution set in Kodi too?