Power Flow Card animation direction inverted on tablet using Fully Kiosk Browser

I’m experiencing an issue with the Power Flow Card when displaying my Home Assistant dashboard on a tablet running Fully Kiosk Browser.
Setup:

Home Assistant dashboard
Power Flow Card
Tablet with Fully Kiosk Browser (dashboard in fullscreen)
Same dashboard also viewed on other devices and via the Home Assistant Companion App

Problem:
On the tablet using Fully Kiosk Browser, the animation direction of the individual power flows appears to be inverted.
For example, power that should visually flow towards a device is shown flowing away from it.
When I open the exact same dashboard:

on another device (PC / phone browser), or
in the Home Assistant Companion App

the flow direction is displayed correctly.
What I tried:

Adjusting the inverted_animation setting in the Power Flow Card configuration
→ unfortunately, this has no effect on the tablet running Fully Kiosk Browser.