Grid frozen columns have alignment issues on iphone (safari and chrome), work fine on other devices.

[sjellenoff]

Short description
Same as title.

What is current behavior
Frozen column row data way out of alignment with column headers on iphone device regardless of Safari or Chrome.
Users have tried a variety of iphones and had problems with all of them. Feature works just fine on PC and Samsung phones I've tried.

What is desired behavior
Frozen column row data should align with column headers properly as they do on PC and Samsung phones I've tried.

Link to jsfidle/codepan with sample code
https://w2ui.com/web/demos/#/grid/3

Steps to reproduce or sample
Simply navigate to the link on an iphone and observe the # columns row data or see picture below sent by one of my users.