Really strange box rendering with OBJ characters?

[achuinard]

I've used this library for a long time but recently one of my customers informed me that their PDFs are rendering with a strange box with the letters OBJ inside:

I don't understand what could possibly be rendering that OBJ. The user's data in Firebase looks perfectly normal:

The funny thing is, if I delete this property from their Firebase node and re-add it with the same text, it now renders fine without that OBJ:

But the data is literally the exact same in Firebase before I deleted and re-added:

Is there some strange character in there that Firebase isn't rendering and is causing messed up rendering on the PDF?

[danfickle]

I think your theory is correct. It appears to be copy and pasted text.

https://en.wiktionary.org/wiki/%EF%BF%BC

Sample of usage:
https://developer.apple.com/documentation/businesschatapi/messages_sent/adding_attachment_metadata_to_a_message

It will also depend on whether the font has this character. Maybe we should filter it out with something like #549?

[achuinard]

@danfickle you are great. Thanks for fixing this!