After enabling customization for a page, unable to add portlet to column that does not enable customization

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP90, 7.0.10.13 DXP SP13, 7.0.X, 7.1.10 DXP FP13, 7.1.X, 7.2.10 DXP FP1, 7.2.X, 7.2.1 CE GA2, 7.3.10 DXP GA1, Master
• Component/s: Core Infrastructure, Themes Infrastructure > Layout Templates
• Labels:
  • liferay-dxp-70-sp13
  • liferay-fixpack-de-90-7010
  • liferay-fixpack-dxp-1-7210
  • liferay-fixpack-dxp-13-7110
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/75449

Reproduce steps:
1. Go to site control panel --> site builder --> pages
2. Open configuration of Home page
3. Under general tab, choose, for example, 2 columns.
4. Under advanced tab, enable Customizable, and then enable Customizable for one of the columns. And make sure these settings are saved properly.
5. Go back home page, and try to add a portlet, e.g. Asset Publisher, to the column that did not enable Customizable

Expected: able to add
Real: unable to add, console reports error.