T46 fills all unset blf's

[KristianMedK]

I've encountered a few issues with T46, where it, seemingly out of nowhere, fills all empty blf buttons with a label "SpeedDial_Idle", which then have to be manuelly removed or overwritten with something else.

I haven't been able to deliberately introduce this error with autoprovisioning.

Is this a known issue, or do you have any idea as to why this could happen ?

The phones where this happened are running firmware 28.80.0.70.