Strava: Time Getting Cut Off workouts?

I've noticed that Strava is chopping my OWS times apart. What appears on Garmin Connect looks accurate and fine, but the minute it goes to Strava they chop time off the swim.

i get Strava doesn't count "moving time" so if I'm treading water it won't read that as part of a workout. Fair enough. But They will randomly take say a 1500m swim...with a time of 24minutes...and turn it into a 20minute swim.

Anyone else have issues with Strava?

I've had similar issues with them on Runs..but I think I can explain that by running upstairs, where it may look like i'm not moving fast.

But why is Strava doing this...but everything on Garmin Connect looks great?

Anyone know whats going on, or have similar issues with Strava?