When you have an initial column that is setup to use a customrender and you have the setting of fixedColumnsLeft configured where the custom column should be fixed, if the contents of the page require scrolling, the contents of the custom column disappear. If you click to edit some cell, the data re-appears.
It sounds complex, but it’s easy to replicate using your own test page. Goto thiis page:
Then simply, add the following attributes to the settings:
Setting the height to 100 will cause the scroll bar to appear.
Then simply scroll down and notice the data in the first 2 columns disappears.
Hoping you can find a fix!