Anton clock not displaying time

I just tried switching to Anton Clock (having used a hacked-up version of mtnclock for ages), in the hope of making the time more easily readable, but the time doesn't appear to actually appear – the top half of the clockface is just blank. (The date/day/weeknum displays fine, in both bitmap and vector fonts, it really is just the time that's not there.) Both antonclk and antonclkplus have the same problem.

I've tried reinstalling the apps, rebooting the watch, and updating to the latest firmware (2v19.117). I'm using a fork of BangleApps, https://github.com/sersorrel/bangleapps, which I've just rebased on upstream – the only even tangentially-relevant changes I can see I've made would be to locale, to add AM/PM to the time.

Any ideas what I've broken?

When you connect with https://www.espruino.com/ide/ do you see any output in the console?

It seems weird Anton clock should be broken. Works for me on fw 2v19.89. I'll update to latest cutting edge to see if I hit it.

Nothing particularly interesting:

{"t":"status","bat":94,"chg":0}
{"t":"ver","fw":"2v19.117","hw":2}
{"t":"force_calendar_sync","ids":[0]}

Works for me on fw2v19.117 as well.

So what happens if you use locale from main repo?

It works! which is annoying, I don't really understand why that's the case. but hey.

the only even tangentially-relevant changes I can see I've made would be to locale, to add AM/PM to the time.

I think that is the issue...

https://github.com/espruino/BangleApps/commit/6bc27072041029a06f24ed902064a04942756ce5#diff-2e2b662c4e6b3dbd50b1734254dc768edc6d965891c216970120a5010a4d3487R74

Anton clock does just draw the string as-is: https://github.com/espruino/BangleApps/blob/master/apps/antonclk/app.js#L17-L18

But maybe the font used is only for numbers to the text gets left off? Maybe the string ends up so long it pushes the numbers off the screen?