Growing number of users with "Unknown" version in Statistics page

Number of users of my addon doesn’t really change over the years in Firefox, but I can see since ~12th of December 2023, the number of “Unknown” users is growing:

What are those?
Currently they make only 1.8% of all users, but this percentage is growing steadily.

Curious. I’ll reach out to the engineering team and see if they have any idea what’s causing this.

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Looks like we’re not 100% sure what’s causing this and will need to investigate.

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Looks like the main source of “unknown” versions is Firefox for Android.

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Thanks!
That explains the December 14th when this happened:

In any case, someone should probably fix or at least report that, right? :slight_smile:

I don’t know if it has been reported on Bugzilla or the addons repo, but if you find/create an issue I’d be happy to pass it along to the right folks :smiley:

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