6.3 LTS editor fields that use custom Font Assets are invisible

Hi, upgraded my project from 6000.2.12 to 6000.3.2 and everything went well except my custom dialog editor has a problem rendering text fields that use a custom font asset. I’m using USS to reference a monospace font to make textbox sizing more predictable, but when updating, any field using my font asset is now invisible.


This is how the relevant selector in my USS looks, it normally loads font from the same directory as the USS file:

#dataField > TextInput {
    -unity-text-align: upper-left;
    -unity-font-definition: url("cour.asset");
    white-space: normal;
}

According to the UI debugger, it still loads the asset, and I’ve tried to rebuild the font atlas too.
Did anything change that wasn’t in the breaking changes of 6000.3 LTS, or is this a bug?

Really late bump, is this an intentional functionality change, or a bug to file?