Additional management toolbars for Export or Import processes appear after navigating to "Publishing > Export" or "Publishing > Import" and then navigating to any other page

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.X, Master
• Component/s: Staging > Export/Import
• Labels:
  • ui
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/59865

Source: https://dev.liferay.com/en/web/liferay-7.1-community-beta-program/feedback/-/message_boards/view_message/1731826

Reproduced on:
Tomcat 9.0.6 + MySQL 5.7. Portal master GIT ID: d02a6f210248eefe50ec34c21b84cdb7a546d061.

Steps to reproduce:

1. SPA should be enabled (javascript.single.page.application.enabled=true in portal-ext.properties)
2. Navigate to "Publishing > Export" or "Publishing > Import"
3. Navigate somewhere else in the portal (so far I've tried Pages, Page Fragments, Web Content, Documents and Media, Blogs, or even the Welcome landing page)
4. Wait ~ 1-2 minutes

Expected result:
Nothing should happen.

Actual result:
Additional management toolbars begin to appear at the rate of around 1 new management toolbar per minute. The management toolbars will be for whichever portlet (export or import) the user was previously on because clicking the plus buttons on those toolbars will take you to the add screen for that portlet. Refreshing the page makes the additional management toolbars go away.

I also tested navigating to other portlets besides import/export first (e.g. going to web content first and then going to documents and media) to see if it would happen there too, but it does not.