I am inputting my business use of home expenses and they don't seem to save after inputting them in the respective sections (interest, utilities, etc) and clicking save.

Are you using TurboTax CD/Download or TurboTax Online? 

I am using the online version (TurboTax Self Employed 2023)

The expenses are still there and are still part of the net self-employment income calculations, but they are not displaying properly.

We are aware of this issue and are looking into it. We apologize for the inconvenience.

I have reported this issue here as well and TurboTax has just sat on this MAJOR BUG for multiple weeks without resolving it. This is unacceptable during tax time.