Lost ability to add or edit taxes on expenses?

Up until this week, my company had been able to add taxes to an expense, but now the option is no longer there. Previously, taxes were their own column when creating an expense, and there was a dropdown menu in which we could indicate if the expense was inclusive or exclusive of tax. Something has happened (perhaps in an update?) and I can no longer see how to add taxes. The column is no longer there, nor can I add it. I'll attach a screenshot of what we see in the individual expense. 

Even more bizarre, when I am in the overall "Expenses" tab, there is still a column for Sales Tax and I'm able to see previous expenses that had taxes included, but when I click on them, there's no longer any indication of what the tax amount is or ability to change it.  

Is anyone else experiencing this? Has a setting changed somewhere that I need to alter?