Choosing input method when on MessagEase

Recently found the [MessagEase](https://play.google.com/store/apps/details?id=com.exideas.mekb) keyboard and really like it, but don't necessarily want to use it all the time. With the other keyboards I use, I long press on the spacebar will open the "Choose input method" selection, but not so with MessagEase. [Their FAQ](https://www.exideas.com/ME/android_faq.html) says to "Tap and hold on any text field" to switch input methods, but that doesn't seem to work for me (just get the standard cut, copy, paste, etc pop-up). Currently have to go into the Android settings under Manage Keyboards and disable MessagEase to switch to a different keyboard, which is sub-optimal. Any ideas of an easier way? (Android 10/LineageOS 17.1)