Editing strength workouts on the mobile app seems real buggy.
I think it's a lot worse if you use "rounds". If you set a manual weight, for example 175 and you try to edit it, it will say 174.9.
If you use a bench mark (in a round) it will not show the weight. If you try to edit it it shows the weight as 0 lbs or doesn't have a selection.
Right now I have to do all of my edits on the web. The mobile app makes things really weird.