Not able to save Jenkins job configuration on Jenkins version 2.190.2

I tried to update few configuration on my Jenkins jobs and when i click save button there is no progress and not throwing any error.
I am using Jenkins version 2.190.2

NOTE: I need workaround solution for this we are not in the position to update Jenkins version. So please help us to fix this issue.

Hi Srinivasan ,
Did you get any solution to this issue.I am also facing similar kind of problem , when i try to modify or add any changes to the configuration page i am not able to save or apply it , the save and apply button is grayed out.

Do know any possible solutions