The formatting goes wonky or the macros stop working and you get the blame for doing something "weird" to the document everyone else managed to pass around just fine.
As much as you're doing the right thing by using open formats, you still end up looking like the incompetent employee. No good deed goes unpunished.
Or dealing with any professional service that isn't your day job. Like oh you need to fill out some legal documents, the fields use something proprietary in Word that they can't just convert to PDF...
> You could just open it in libreoffice, make your changes and send them back an ODT, see how they like it.
We didn't, and have decided to go with someone else who costs three times as much as you do. It's a bargain after the dozen internal emails back and forth, the missed deadline, and the subsequent heated discussions with you that your ODT caused. We know they aren't as good as you are.
The formatting goes wonky or the macros stop working and you get the blame for doing something "weird" to the document everyone else managed to pass around just fine.
As much as you're doing the right thing by using open formats, you still end up looking like the incompetent employee. No good deed goes unpunished.