[Libreoffice-bugs] [Bug 143796] Screen sometimes doesn't repaint

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=143796

david at symplectic.email changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |UNCONFIRMED
     Ever confirmed|1                           |0

--- Comment #13 from david at symplectic.email ---
I have now discovered, by accident, a reliable way to reproduce this bug.

1. Open Calc v 7.1.5.2 fullscreen in Lubuntu 20.04 with qt5. Do not resize to
fullscreen; if necessary resize, close and then reopen. See image 1.

2. Click the dropdown arrow to select a font colour. The toolbar will not be
repainted. See image 2.

3. Select a colour, for example red. Then enter a value in the default cell,
for example enter 3 in cell A1. Most of the sheet will fail to be repainted.
See image 3.

NOTES

1.  This does not appear to happen in Lubuntu 20.04 with SAL_USE_VCLPLUGIN =
gtk3 selected in LXQT Preferences.

2.  This does not appear to happen with Calc v 7.2.0.4; note that, despite
comment 6, this still uses qt5. See image 4. 

3.  This still happens if Calc opens in its default window size instead of
fullscreen.

4.  This does not appear to happen if the window is resized first, or if it is
minimized and then restored, or if Calc opens in a window which is not its
default size.

5.  This still happens if values are entered in cells before the dropdown arrow
is clicked.

6.  This still happens if the dropdown arrow to select the background color is
clicked instead of the arrow to select the font colour.

7.  This also happens with other components: Writer, Draw.

STATUS

The on-screen instructions state:

Note to Bug Reporter:
This bug is (most likely) in NEEDINFO status because someone has asked for
information or data. After you've satisfied the request as best as you can,
please leave a comment and change the status back to UNCONFIRMED. 

As I have now satisfied the request as best I can, I shall change the status to
UNCONFIRMED.

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