Custom Heading Style font defaults to Calibiri only for Arial

[monoaminergic]

Problem to Solve

• Changing the font of a heading to Arial results in any text it's applied to defaulting to Calibri.
• This occurs to all styles in the "Heading - include in TOC" category,
• Other categories I have tested (e.g., "Quote") are successful in changing the font to Arial.
• Other fonts (e.g., Arial Narrow) can be changed successfully for the "Heading - include in TOC" category.

This isn't a major issue for me personally, I just wanted to make sure you know :)