Why does the Windows Store app use the GPU when checking for updates?

Start the Store app (Windows 10) and then click on “Get Updates”.

Check the GPU tab in Task Manager and see under “3D” that it rises from 0% to around 10%. It stays at 10% while it’s checking, so it’s not just the window appearing.

This is on an onboard GPU of an Intel i5 9600K if this matters.