If I'm not mistaken, in older versions of Electrum (I don't remember the version), when I activated the Labeling feature in Trezor Suite, Trezor couldn't be used in Electrum.
I never had this issue when using them together, but maybe there was some bug in the code because electrum wallet also have their own labels.
Labeling address and transactions is very helpful and these days I can't imagine using any bitcoin wallet without that feature.