When long pressing to highlight text to select, if the toggle android app is installed, there is no way to disable the “Toggl Track” option from appearing in the context menu.
Toggl is the only application I regularily use that both automatically adds such an entry and has no option to disable it, so I have been forced into using the web app on the phone for some time to get around the issue.
Here is an example of such a feature from the flashcard app Anki.
