Actually it was an update pushed in the last couple of hours which have solved the issue. At least on one of the plugins which I have tested. I hope it will be the same way on all the plugins. Thanks for your help.
I have several number and string fields in my plugin-rendered page through a custom template edit_info.tpl.
Everything is working fine and wanted to add some validations for the fields before submitting.
What would be the best way to achieve this?