I'm designing an ornamental font for creating patterns. Every glyph is a tile that when repeated creates a pattern.
I've set the UPM at 1000 and generated a CFF-flavored OTF file.
When I use it in MS Word (haven't tried other applications), every few tiles (letters) there's a little overlap between two adjacent tiles, as if Word places the next tile a little closer to the previous one instead of at the exact position, and the pattern goes out of synchronization.
Is it because of some rounding mechanism?
Is there anything I can do about it?