Selected glow remains after unfocus

Hey All,

I'm receiving this bug were i click on a block it will high light it but also put some weird border around the block. After checking the border i also realise it breaks the code so i can't export it either. I expect this is not standard behaviour any suggestions on how to fix this? images below as reference. <img width="665" alt="screen shot 2018-08-06 at 9 58 25 am" src="https://user-images.githubusercontent.com/29697157/43691425-bed7171a-995f-11e8-8485-637a07082d7a.png"> <img width="674" alt="screen shot 2018-08-06 at 9 58 39 am" src="https://user-images.githubusercontent.com/29697157/43691426-c67caf8e-995f-11e8-93ce-6ca2090859a0.png"> <img width="194" alt="screen shot 2018-08-06 at 10 02 41 am" src="https://user-images.githubusercontent.com/29697157/43691440-f83db36a-995f-11e8-991a-88728ac2d22c.png">