Screen shows information of logged in user after waking from hibernate

EDIT: the second paragraph should read:

For example if I had a maximized caja window in my first workspace and I shut my laptop lid, there is a non-zero chance that upon opening the laptop later and waking the machine the individual who opened the lid may be able to briefly see all files / documents within that caja window *before* the lock screen is showed.

This has been fixed on the master branch of mate-screensaver: https://github.com/mate-desktop/mate-screensaver/commit/234e5c835559b0afe56c2af246e2148ac5b47a07

On August 31, 2019 2:29:16 PM EDT, Victor Cushman <email address hidden> wrote:
>Public bug reported:
>
>When waking my laptop from hibernate, the (presumably) last drawn image
>of the logged in user is occasionally displayed before the lock screen
>is shown.
>
>For example if I had a maximized caja window in my first workspace and
>I
>shut my laptop lid, there is a non-zero chance that upon opening the
>laptop later and waking the machine the individual who opened the lid
>may be able to briefly see all files / documents within that caja
>window
>*before*
>
>I have noticed this multiple times on my Lenovo Thinkpad X1 Carbon, but
>I have not noticed it occur on my Lenovo 130S-11IGM or my Lenovo
>Thinkpad T480. I have not found a consistent method to reproduce the
>behavior, so I am not sure whether or not it is the specific machine
>that causes the behavior.
>
>All occurrences have happened on Ubuntu MATE 18.04.
>The most recent of which occurred on 2019-08-31 on an up-to-date
>version of Ubuntu MATE 18.04.
>
>** Affects: ubuntu-mate
> Importance: Undecided
> Status: New
>
>--
>You received this bug notification because you are subscribed to Ubuntu
>MATE.
>Matching subscriptions: lp: ubuntu-mate bugs
>https://bugs.launchpad.net/bugs/1842186
>
>Title:
> Screen shows information of logged in user after waking from hibernate
>
>Status in Ubuntu MATE:
> New
>
>Bug description:
> When waking my laptop from hibernate, the (presumably) last drawn
> image of the logged in user is occasionally displayed before the lock
> screen is shown.
>
> For example if I had a maximized caja window in my first workspace and
> I shut my laptop lid, there is a non-zero chance that upon opening the
> laptop later and waking the machine the individual who opened the lid
> may be able to briefly see all files / documents within that caja
> window *before*
>
> I have noticed this multiple times on my Lenovo Thinkpad X1 Carbon,
> but I have not noticed it occur on my Lenovo 130S-11IGM or my Lenovo
> Thinkpad T480. I have not found a consistent method to reproduce the
> behavior, so I am not sure whether or not it is the specific machine
> that causes the behavior.
>
> All occurrences have happened on Ubuntu MATE 18.04.
>The most recent of which occurred on 2019-08-31 on an up-to-date
>version of Ubuntu MATE 18.04.
>
>To manage notifications about this bug go to:
>https://bugs.launchpad.net/ubuntu-mate/+bug/1842186/+subscriptions

This has been fixed on the master branch of mate-screensaver: https://github.com/mate-desktop/mate-screensaver/commit/234e5c835559b0afe56c2af246e2148ac5b47a07

Fantastic! Thank you!

I'm seeing the same bug in Ubuntu 20.04. Is it the same issue that came back?