Would you mind to clarify what do you mean by "I have played around in it prior to installing essential grid"
I did check everything (except plugin conflict test) but I could not figure out the issue, even a new Grid is acting weird.
Please export your Grids and keep it as a backup, then reinstall your Essential Grid plugin under Pro > Validation > Extensions
If the issue persists, please do a testing for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. If it's fixed, you'll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
Let us know how it goes,