You can not read the whole message of the invite notification on the Invites tab of the Notification view (not in-game) of Android Mobile.

See the attached image. It only shows 24 characters at best and 6 characters at worst (if attaching an image and using Japanese characters) in this case. Also, it lacks the height on each field.

Tapping on each message shows the sender's profile. Instead, I prefer that tapping on the text shows the message in a large popup like the Group post notifications, leaving behavior showing the profile by tapping the sender's user icon.

Although you can see them in the in-game notification view of MM, this issue decreases the usefulness of the recently introduced Offline Invites feature.