This response is unofficial and maybe the machine is busted, dunno.
But usually these anomalies are coding issues and not the machine going into an alternate universe. So I examined it from that angle.
Something is going on there and I suspect it has to do with the UI SVG interpretation fighting against some artifact of the SVG file from the program that saved it.
Opened it in Corel and it is a mess. This usually happens if someone uses Inkscape and does not save it as a native SVG.
When saved as ‘Inkscape SVG’ it adds artifacts that are useful to the program apparently, but are not regulation SVG protocol.
Remember that a protocol means it must have ‘at least this’. Lots of companies add extra coding on top of a protocol to aide their native programs, and it is allowed because they have the ‘at least this’ included.
My fix for that is to load it into Inkscape and re-save as either a native SVG or a PDF.
I did that with this file. Saved it from Inkscape as a PDF and loaded it into Corel.
It showed crisp. When blown apart and examined I saw nothing around that P that should have caused an issue.
TL:DR Try saving the file as a PDF from whatever you drew it in and maybe prevent the Glowforge UI from mis-interpolating whatever artifact of extra coding caused your issue.