Can't zoom in with [CTRL][+]

I have a Microsoft Surface Pro 6 laptop, and Xd v35.3.12.2.

I can't zoom in using the shortcut key [CTRL][+].

I can zoom in using [CTRL][-]. I can also use zoom shortcuts like [CTRL][1] to zoom to fit.

It's only [CTRL][+] that is not working.

I'm assuming this is a bug, because using [CTRL][+] is standard in other Adobe products, like Photoshop and Illustrator.

However, even if there is another shortcut key for zooming in, I'd like to set it to use [CTRL][+], because I'm so used to doing it that way.

Is there something I can do to fix this, or is this a bug?