Hello,
I have a problem in my website with k2. I updated to 2.7.0 and 2.7.1 and I had with the two versions the same problem.
When I enter in a k2 item the Publish button Yes/No and Featured buttons Yes/No, do not have colors, so we dont know at which State they are.
I made the installation again and again. Tha result is succed but nothing change in the page.

Also I notice again in k2 items in backend, that the all selects categories etc are shown in different format.
You can see a screenshot here
imgur.com/a/LQ22g

How can I solve these problems?

Thank you!

I also use Joomla 3.6.4
and k2stor 3.8.3

I also use Joomla 3.6.4
and k2stor 3.8.3

I also Reinstalled Joomla core files, nothing changed. Repair tables, nothing changed..
What can I do?

There must be a conflict with a js
or in database?????????
The state isChecked is not attached to the button.

I found that the problem went out when I desactivated
K2 Plugin-K2 Store.
The version I had installed is 3.8.3 and I checked and it is the last version, no update available..
How can I fix it?
Any suggestions???

Solved with github.com/getk2/k2/commit/25d96e9998af29c163b8b8896c053ddb535c17a7

You can donwload the latest dev version from github.com/getk2/k2/ and install it through the extensions manager like any other Joomla! extension.

After RE-installing back K2 2.7.1 fixed the problem with the SW tabs plugin..
but... the problem I have now, and had it in the pas thats why I had to install k2-master, is that when I am on the k2 list item page, and search in the filter with greek characters, seams like nothing changes..
I had found this topic
www.joomlaworks.net/forum/k2-en/46488-filter-by-title-in-k2-items-not-working-in-greek
so installing the k2-master had fixed the filter with greek characters problem but broke the SW tabs plugins...
Please? Any solution???

Unfortunately this is an issue with a 3d party extension.
You need to address this issue to the extension's developer (SW Tabs).