User data rendered incorrectly in CB

Hi Im using Joomla 3.7.4, CB 2.1.3 PHP 5.6 CBSubs 4.1.0
Im having issues whereby incorrect data is being displayed in CB fields when viewed from the backend CB UserManager and front end through CB Lists
I assumed the database had become corrupted but restoring earlier versions of the site resulted in the same behaviour
But when I access Phpmyadmin and export the tables (comprofiler and users) the data in these tables is intact and correct
So I thought it was due to PHP7 but reverting to PHP 5.6 has not solved the problem
Currently have run out of ideas to solve this and any suggestions welcome!
regards
Tony Marsh

Perceived substantial problems with the membership system today whereby members data was getting overwritten by my info - ie names address etc
Struggled most of the day trying to work out what was causing it but the penny finally dropped after reading Krileons response to a similar post
The browser I was using - Google Chrome - was usings its autofill function to overwrite fields in members records
So repeated attempts to save updated data "seemed" to be failing when in fact it wasnt
Anyway solution was simply to change to another browser - currently using Edge which is the MS replacement for Internet explorer
It appears all data is safe and sound thankfully
Still to determine if LastPass played a role in this which was mentioned in Krileons post
Tony

If you're using LastPass to do form filling then it, by default, ignores autocomplete="off". At this time we only set this for the password field, but we'll be adding it to the whole form in a later build. Form fill however shouldn't fill without being manually trigger. I do not recommend setting up form fill to auto fill. This means the only autocomplete you should have is username and password. For LastPass to respect autocomplete="off" you need to go to LastPass > Preferences > Advanced and toggle that on. Beyond setting autocomplete="off" in the HTML there's nothing more we can do about this.