TableLayoutPanel missing on toolbox and not rendered on designer.

[AlexNek]

• .NET Core Version:

.NET Core SDK (reflecting any global.json)
Version: 3.1.200-preview-014883
Commit: 4e2a0ee959

• Have you experienced this same bug with .NET Framework?:
  No

Problem description:
It is not possible to create TableLayoutPanel as it is not visible on toolbox but present on "Choose Toolbox Items" dialog.
I tried to move my old Winforms project to Core. I have created new Winforms Core project and copy my old sources there. All forms are destroyed - all resource information are missing. I can't recreate forms from scratch too as TableLayoutPanel is missing and not rendered.

Expected behavior:
It must be possible to create TableLayoutPanel for winforms core

Minimal repro:
Create empty winfroms core project try to add TableLayoutPanel over toolbox

[merriemcgaw]

We are currently working on the designer for TableLayoutPanel (Core), so it's not unexpected that you don't see it at this point. Our designer updates are coming out with each VS Preview now, and I expect to have TableLayoutPanel available by 16.6P2. Thanks for testing the Preview Designer! If you want to provide feedback or ask questions of the VS WinForms Core Designer, the best way to do that is the VS Feedback tool.