** Summary changed:

- Lubuntu Arc theme + Breeze widgets hides menu scroll bar when searching
+ LXQt Arc theme + Breeze widgets hides menu scroll bar when searching

** Description changed:

  STEPS TO REPRODUCE
   1. Click the menu
   2. While not highlighting any menu item, type a
   3. Mouse over the results
   4. Use the scroll wheel to move down a screen
  
  Note there are additional results despite no scroll bar being displayed.
  
  Two idiosyncracies regarding #2:
   1. This works in English. If you have another language, especially one that 
does not use Latin characters, you will certainly want to use a different 
character.
   2. The important thing is that you have a set of results that are greater 
than the maximum number of entries to display. To see that, right click on the 
menu button and click "Configure Application Menu" and then look at the value 
for "Maximum visible items," which defaults to 10.
  
  EXPECTED RESULTS
  A scroll bar should be visible. You'll notice one is if you use, for example, 
the Ambience LXQt theme.
  
  ACTUAL RESULTS
  The scroll bar is entirely invisible.
  
  NOTES
  Looks like this is in Ambience:
  
  #MainMenu QScrollBar::handle {
      background-color: palette(highlighted-text);
      color: palette(highlighted-text);
  }
  
  but there does not seem to be something similar in our theme.
  
  The default for upstream is Frost and it also suffers the same problem.
  
- ProblemType: Bug
- DistroRelease: Ubuntu 18.10
- Package: lubuntu-artwork 1.6
- ProcVersionSignature: Ubuntu 4.17.0-6.7-generic 4.17.9
- Uname: Linux 4.17.0-6-generic x86_64
- ApportVersion: 2.20.10-0ubuntu7
- Architecture: amd64
- CurrentDesktop: LXQt
- Date: Fri Aug 17 01:30:05 2018
- Dependencies:
- 
- InstallationDate: Installed on 2018-08-17 (0 days ago)
- InstallationMedia: Lubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180815)
- PackageArchitecture: all
- SourcePackage: lubuntu-artwork
- UpgradeStatus: No upgrade log present (probably fresh install)
+ AFFECTED VERSIONS
+ Lubuntu 18.10, lubuntu-artwork 1.6, lxqt-panel 0.13.0-0ubuntu5
+ Lubuntu 19.04, lubuntu-artwork 19.04.2, lxqt-panel 0.14.1-0ubuntu1

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https://bugs.launchpad.net/bugs/1787734

Title:
  LXQt Arc theme + Breeze widgets hides menu scroll bar when searching

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