Qt Designer v6.4.2: Dark UI issues?

[CJha]

Hi, I have recently installed Qt 6.4.2. I am using Qt with Visual Studio 2022 with the extension Qt VS Tools. In this new version of Qt Designer the Form UI has a dark background while the rest of the UI has a light background, this was not the case with v6.3.0. In this dark Form UI most of the things work fine but the QSpinBox widget has a white background for texts while also having the text in white, this makes it impossible to see the text inside the QSpinBox. This problem persists even in the preview. See pictures below:

Qt Designer v6.4.2

Preview of the Form:

If I change my Windows theme to Light theme then this problem disappears. But there is no way to toggle the the theme of the Qt Designer from any settings inside the Qt Designer. I also tried to change the theme of Qt Creator v6.4.2 to a light theme thinking that it might affect the Qt Designer, but it doesn't.

This is very annoying as I use a lot of QSpinBox in my .ui files, and any project linked with Qt v6.4.2 will by default open it's .ui file with Qt Designer v6.4.2. Is there any way I can fix the issue except for forcing myself to use everything in light mode?

[JKSH]

@CJha said in Qt Designer v6.4.2: Dark UI issues?:

In this dark Form UI most of the things work fine but the QSpinBox widget has a white background for texts while also having the text in white, this makes it impossible to see the text inside the QSpinBox. This problem persists even in the preview.

Looks like a bug. See if there is an existing bug report, and open one if there isn't: https://bugreports.qt.io/

[CJha]

@JKSH Couldn't find a bug report for this issue so I created a new bug report: link