Tile preview graphics glitch

[Adam Smith]

Steps to reproduce bug:

1. Snap a window to the left of the screen
2. Snap a window to the right of the screen
3. Before the tile preview appears the background of the left of the screen appears very briefly (a fraction of a second) at the right of the screen
4. Snap a window to the left of the screen
5. A similar graphics glitch is observed on the left of the screen (i.e. the right hand side background is flashed on the left of the screen).

This is reproducable under 12.04 (precise) and 14.04 (trusty).

Marco version: 1.8.2+dfsg1-4~trusty1

This is on a big-endian machine (PowerPC), but I think the slowness of the machine is more significant.

[Adam Smith (adamsmith)]

The attached patch fixes the problem for me.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "tile-preview.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Adam Smith (adamsmith)]

I raised this as an issue https://github.com/mate-desktop/marco/issues/158

[Launchpad Janitor (janitor)]

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

[gravy45 (gravy45)]

I'm seeing it also in marco 1.8.3+dfsg1-3.

[Martin Wimpress  (flexiondotorg)]

This fix is committed in Marco 1.10.

[Martin Wimpress  (flexiondotorg)]

Marco 1.10 has just been uploaded to the Ubuntu MATE 15.10 archive and fixes this issue.

[Adam Smith (adamsmith)]

Tried mate 1.12. This is not fixed.

[Adam Smith (adamsmith)]

Martin this is not fixed. I can't see a patch for it, and the code hasn't been changed from what I can tell. Apologies of I'm missing something.....

The patch I submitted explains the changes needed in comments. It just hasn't been implemented correctly.

[Adam Smith (adamsmith)]

Still present in Linux Mint 18 Mate edition. I can't believe nobody else has noticed this!

[Adam Smith (adamsmith)]

A similar glitch can be seen in Mutter. I bet they share a similar flawed logic.

[Norbert (nrbrtx)]

Can you reproduce this bug with newer version of Ubuntu MATE?

[Launchpad Janitor (janitor)]

[Expired for marco (Ubuntu) because there has been no activity for 60 days.]