Fabrication software does not like when the objects are really far from 0,0,0 in the drawings.  That is what causes the text to glitch out.

You have (2) options:

Manually move the model closer to 0,0,0 and then generate the spools

Turn on the spool setting "Move Model" which basically does the same thing automatically while it generates isometric drawings.

That setting is located in the Spool.ini file.

Internet says the ini file is located here:

C:\Program Files\Autodesk\Fabrication 2014\CADmep

https://knowledge.autodesk.com/support/fabrication-products/learn-explore/caas/CloudHelp/cloudhelp/2...