Battery info works in editor but not in widget

Just tried setting up a widget to show the remaining battery duration until charged/empty by using $tf(bi(fullempty))$.

It works well in the editor but the widget always shows “moments ago” so I removed the $tf()$ bit and only left $bi(fullempty)$, which shows fine in the editor but is empty in the widget.

Battery optimization is off, notification is showing and i confirmed KWGT was running and that the widget updated fine otherwise.

This is on a Nothing Phone 4a pro running Android 16/Nothing OS 4.1

FWIW, this formula seems to work alright as a stand-in in the meantime (with 5080 being the number of mAh of the battery):

$dp(a + mu(round,((bi(level) / 100) * 5080 / bi(current)) * 60) + m)$