LibreOffice windows appear off-screen and/or under Unity panel

[Cavia Porcellus]

LibreOffice windows that stretch from the bottom of the top panel to the bottom of the screen appear partially off-screen when the program is opened, either under the top panel or with the bottom part of the window slightly cut off at the bottom.

On my computer (Ubuntu 14.04, Unity 7.2.2) those opened an the top workspaces (or if multiple workspaces are turned off) appear with the bottom part off-screen, while those opened on the bottom workspaces appear under the top panel.

But it's not totally consistent: Writer does this, but Calc and Draw open off-screen to the bottom on both the upper and lower desktops. Sometimes the first window opens totally on screen, but as soon as another window is opened, it will be off-screen.

Steps to reproduce:

1. Open a LibreOffice application (Writer, Calc, etc.) and make it so that it's not maximized, then throw it to one side (or extend the window up to the panel) so that it stretches from the bottom of the top panel to the bottom of the screen.
2. Close LibreOffice.
3. Open LibreOffice again and see that the window is slightly off-screen to the bottom or under the panel.
4. If it is totally on screen, open a new window, which will always be off-screen.

Attached is a screenshot of LibreOffice Writer after the launcher icon is clicked from the top left workspace.

[Cavia Porcellus (caviaporcellus)]

LibreOffice writer when opened from the lower left desktop: it opens partially in the panel.

[Cavia Porcellus (caviaporcellus)]

A final screenshot: the problem in a fresh live USB version of 14.04 (Unity 7.2.0), showing that it's not just some non-default setting I've messed with.

[Launchpad Janitor (janitor)]

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