I am trying to add value in Color Swatches in magento backend but it is not working. Even I Tried to add/Delete and update any of these operation is also not working in visual swatches.
Looking at the fresh setup of magento 2.2.1 its working perfectly.
Able to add/edit color swatches from magento backend with visual swatches as well.
So its looks like issue with your current setup of magento or its conflicting with some another module.
Could you please check your error log from var/log directory and post here ?
Also it would be a good to check on browser error console as well , so please check and
if any error there then post here.
We are using approx 250 options for color swatches attribute, We are not getting any error in var log. We have also increased the max_var_limit . We are not sure if any plugin or something else is conflicting cause we are not getting any error in error log and exception log.
Please confirm are you in developer mode or production mode ?
If you are in production mode , kindly change it to developer and then check.
It will gives your error in error log
Also could you please confirm , there is no browser console error ?