Can currently also not reproduce it. Seems to be very dependent on internal state? We can close it if you want.

That's exactly my issue (Librem 13v3). After boot I have to plug-cycle the mouse once for it to become usable

I would describe the symptoms slightly different, but I'd say it has the same cause. (Assuming purism-power-optimisations)

Works. Seems to have been fixed by a recent update, defaulting to java to jre10?

@mak should I create a separate task for the pipe issue?
The situation is very confusing to me. Pipe worked when I received my German Librem13V2 a few days ago, now it no longer works.
I'm wondering if this is a result of T328 (fixing US, breaking DE?), but I can't tell.
However, two other users previously reported that it stopped working: https://forums.puri.sm/t/librem-13-backslash-key-generates-less-than-symbol/2133
This makes me wonder if it could be a weird sideeffect of ME-disablement / hardware initialization.

I think you're mixing up hardware layout (or labeling) and software layout. If you select a German layout, Z will yield z.