Dock focus bug with Virtualbox

[moreje]

There is a graphical bug with Dock/virtualbox when other apps like Chrome are displayed on full screen.
Virtualbox icon on dock continuously switch between 1 or 2 windows (even if No VM is launched) , resulting in modification of icons/dock size....
this disappear if I reduce the Chrome window
See screen capture to have an idea of the visual output.

Ubuntu 18.10 x64

[Daniel van Vugt (vanvugt)]

I saw someone else report a similar bug with the Ubuntu Dock recently. It was changing size when it should not. Can't find that other bug right now though.

[Daniel van Vugt (vanvugt)]

Found it in bug 1812407.

[moreje (j-redoute)]

What I can't explain here, is the ghost window that seems to appear for Virtualbox: there is alternatively one or two dots next to Virtualbox icon in the dock (while there is no need because no VM/ no secondary instance of this app is launched)
I realised this thanks to the focus bug #1812407

[moreje (j-redoute)]

I confirm that this bug occurs when virtualbox app is on the dock!
I use the last version of virtual box 6.0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.