If you are on the app it likely is just a display problem. In quickly looking at your stats on the website, that doesn't appear to be happening.
Erratic Behaviour in Tactics
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I have submitted this as a bug to the developers. The OP's problem is not reflected in the stats. On my 1 and 1/2 hour train journey home every night, the app becomes unplayable due to network dropouts. It's very frustrating. It seems a simple fix would be for the app to store up maybe 50 or so tactics puzzles? Then up load results when there is reception. Easy.
I like you idea. Thanks for sharing you view. 
The link below shows tactic id 0032714 twice. The link is given below.
https://www.chess.com/stats/tactics/pradnyasoorya
I had tried to make my move about 5 to 6 times before successfully making the actual move. I thought I would get 5 or 6 times the actual point. But I at least got it 2 times. But, actually that is something extra that I don't deserve!
While playing tactics I have noticed that when the move doesn't get submitted due to internet connectivity problem, then the following error occurs -
1. If say I have succeeded in making the move say after 5 times, then my score gets reduced 5 times
if I have failed. Therefore if the marks allocated to the tactics are 6 then my score gets reduced approximately by 5 x 6 = 30 . In normal case it would reduce by only 6. It is as if I have failed in solving the SAME tactic 5 times.
2. If say I have succeeded in making the move say after 5 times, then my score gets increased 5 times if I have succeeded. Therefore if the marks allocated to the tactics are 6 then my score gets increased approximately by 5 x 6 = 30 . In normal case it will get increased by only 6.
It is as if I have succeeded in solving the SAME tactic 5 times.