Using v5.4.2, I can see a score of 1749 in app, but 1756 on my profile. I have a stable data connection and I've killed and reloaded both Lichess and Firefox.
I think what's happening is that the most recent score is missing from the list of recent scores in the app until you start clicking on them, then the missing score turns up and corrects the total (to that as displayed on the website). This correction is lost the next time you load the game.
I think what's happening is that the most recent score is missing from the list of recent scores in the app until you start clicking on them, then the missing score turns up and corrects the total (to that as displayed on the website). This correction is lost the next time you load the game.