Tech tree/VAB bug

[SierraKilo143]

So I bought the breaking ground DLC for Ps4 Pro today and started a fresh carrier to avoide any corruption. I started on Hard difficulty with enabled revert and quickload. Also enabled part preasure and g-force for parts and kerbals with plasma blackout and require signal options. When I unlock the tech with FL-100 Fuel Tank it keeps duplicating and have to purchase the entry fee for that part over and over again whenever I enter tha VAB or the Tech tree, also this tank part is dupIicating every time I repurchase it, so by now I have 3 of this sane FL-100 at the tech tree. I already tried to delete and reinstall the game with the dlcs and also deleted every save file, but without any success of solving this tiny but anoying bug. Please, if you have any solution, I would be happy know.

Edited December 6, 2019 by SierraKilo143
Provided more information about the bug.

[Bradfire]

I am experience the same bug, tried to delete all save games and reinstall the game. Nothing seems to work. Hope there will be an answer soon

[nestor]

This bug is now fixed in the latest patch, however the duplicated parts will remain on existing saves. 

If you purchase the part the first time the part unlocks successfully, but the duplicated parts still show up as "purchasable". It is not required to buy the part again and suggest buying only one of each part. A fresh save file will resolve this issue.