Switching users breaks style of menu bar, side bar

[ghost]

So i was just making song when i for a moment switched to a diffrent user.
When i came back Lmms has changed color :
I only found that i changes only this but it maybe could effect other items in lmms that i dont know about.
(sorry if this topic has been already brought up by someone else btw)

[tresf]

@Texxiliator I've never seen this before and I don't believe it can technically happen without something incorrect happening to your profile or configuration... let me explain...

• The way colors are stored are in a file style.css. This file is %PROGRAMFILES%\LMMS\data\themes\default\style.css. This file is part of the LMMS installation and cannot be altered unless admin and UAC is disabled or manually escalated and accepted. (signing in as someone else can't cause this to break)
• The theme can be changed from default on a profile basis by using the Settings Dialog, Paths, Themes or by editing %USERPROFILE%\.lmmsrc.xml and changing the value of <paths ... artwork="data:/themes/default"> to something else (e.g. data:/themes/classic). I assume you'd have remembered changing this.

Some troubleshooting measures include

1. Uninstalling and reinstalling LMMS, purging the %PROGRAMFILES%\LMMS directory.
2. Moving or deleting %USERPROFILE%\.lmmsrc.xml

But if this does nothing, chkdsk /x as admin and reboot might fix it as corrupt Windows 10 (NTFS) filesystem can cause all sorts of weirdnesses, especially with solid state drives.

[ghost]

@tresf Did you tryed this? Maybe it's just my PC being weird (again).

[Spekular]

I've had weird issues happen in LMMS when windows locks automatically and I have to sign in again, so I don't think it's only you. I haven't been able to reliably reproduce and it was a while ago, but iirc it caused the same color issues as here.

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[tresf]

@tresf Did you tryed this? Maybe it's just my PC being weird (again).

Confirmed. Thanks for the bug report.

Steps to reproduce from Windows 10:

1. Log in as your standard desktop user
2. Open LMMS 1.2.0-RC2 or higher
3. Open sidebar
4. Switch users using Windows, User, Switch Account
5. Sign right back in as the same desktop user

This occurs on 1.2.0-RC2 (Qt5) but not 1.2.0-RC1 (Qt4) pointing to a potential upstream Qt bug.

Interestingly enough... we might be able to work-around it partially.

Here's what happens when I explicitly set a background color. Note how the menu bar bug doesn't occur.

I think with some trial and error, we can fix the items that experience this bug and allow fast-user switching.

/* most foreground text items */
QLabel, QTreeWidget, QListWidget, QGroupBox, QMenuBar {
	background-color: red;  /*  <----- ADDED THIS */
	color: #d1d8e4;
}

[BaraMGB]

I had a similar experience when I installed lmms the first time on Windows 10. But after restart lmms it looked normal. So I don't give something on it.

Look at the Knobs on the second picture. They looked odd too on my installation. Also the mixer looked odd.

[Umcaruje]

Hmm, back when I worked on the theme, I'd sometimes get a similar effect when the style-sheet wouldn't get fully parsed, due to a syntax error. Though this only happens on a user switch, I'm not certain if there's a correlation.