Views block's title not changing based on contextual filter value

I have created a pretty standard view of articles, and it has a contextual filter based on a taxonomy term id in the URL. The view is being displayed in a block.

The view works perfectly, and the filter works as expected. In the settings of the contextual filter, under "When the filter value IS available or a default is provided", I've ticked "Override title". It has a value of "Latest {{ arguments.tid }} News & Projects". (see screenshot).

When I Preview with contextual filters and supply a value of 1, the title changes as expected. (see screenshot)

However, the block's title isn't being changed when I look at the block itself. The contextual filter is working and filtering the articles that are being displayed; its just the title that isn't changing. I switched to core's Bartik theme to make sure it wasn't my theme causing the issue, but that didn't solve it. (see screenshot)

I'm not overriding the block's title.

Additional info: I have a very similar view somewhere else on the site being displayed as a page (not in a block) also with a contextual filter, and there the title gets changed as expected.