Unable to remove Flash if installing 3rd party additions

[Joakim]

I recently installed the 17.04-beta2 and during install I enabled the third party additions (flash, mp3, etc...)

Then when the welcome splash screen launched I...
1: ...clicked on "Software" to get into the software boutique
2: "Internet" and then "Remove" under Flash. It's listed as installed.
3: "Bulk Queue" -> "Apply changes"
4: The error message I get is
"Package isn't installed
There isn't any need for removal.
Package libhal1-flash isn't installed.

Also, I've to click on "Close" twice. It appears twice.

5. Afterward the notification in the top right corner says:
"Adobe®Flash®PLayer failed to install
A problem is preventing this application from being removed"

[Etienne Papegnies (etienne-papegnies)]

I can confirm both bugs.
Reproduced in a 17.04 Alpha2 VM.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-mate-welcome - 17.04.10

---------------
ubuntu-mate-welcome (17.04.10) zesty; urgency=medium

  * Fix the removal of Adobe Flash if installed via Ubiquity. (LP: #1676052)
  * Add Simple Screen Recorder, it is now in the Zesty archive.
  * Update translations.

 -- Martin Wimpress <email address hidden> Thu, 30 Mar 2017 22:46:09 +0100