Originally Posted by: GT StaffFirst, I would say this is definitely a common issue.

In fact, there are a lot of situations during which you'll be muting strings or notes that you don't want muted.

However, with this particular exercise, it's probably "ok" to mute the high E string, either on purpose or not, because you don't need it when you're playing the low E string. If you're playing the lower (thicker) strings, you'll likely mute or rest your palm on a lot of the other strings that you're not playing at that moment, which is totally fine.

My guess is that your form as fine and that this won't cause any long-term bad habits or dysfunction.

Hope this helps!