TurboTable responsive with colgroup breaks column width

[zeatan]

I'm submitting a ... (check one with "x")

[x ] bug report => Search github for a similar issue or PR before submitting
[x ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primeng/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=35

Plunkr Case (Bug Reports)
Please demonstrate your case at stackblitz by using the issue template below. Issues without a test case have much less possibility to be reviewd in detail and assisted.

https://stackblitz.com/edit/primeng-table-responsive-with-colgroup

Current behavior

TurboTable with colgroup(for column style, resizing) in responsive mode, td's width 100% style ignored.
So, column displayed narrowly.

Expected behavior

In responsive mode, remove colgroup automatically.

Minimal reproduction of the problem with instructions

See stackblitz

What is the motivation / use case for changing the behavior?

Please tell us about your environment:

• Angular version: 6.1.10

• PrimeNG version: 6.1.5

• Browser: [Chrome 69| Firefox 61]

• Language: [TypeScript 2.9]

• Node (for AoT issues): node --version =

[dlarr]

Same problem...

[lbatistag80]

Same problem, any update???