Describe the bug
After updating to v.1.5.5-beta.8_en.2022, the "appearance" using a "custom tab image" no longer works.

Reproduce the process
After hovering, the tab image disappears.

• Disable the "use custom tab image" under "appearance" and apply.
• Delete the QTTabBarException.log to clear the log trace.
• Enable the "use custom tab image" under "appearance" and apply.
• Hover over the tabs makes them black (text and image disappears).

Screenshot

System environment

• .NET 版本: 2.0.50727.9164
• 操作系统版本: 10.0.22000.0 Major: 10 环境: 64
• QT 版本: DevBuild: 04/11/2022 16:59:00 (2.0.50727.9164)
• 错误信息: DrawTab

Upload error log QTTabBarException.log

Reading through the log files it looks like the same error is repeated around the function "get_Width()":

Message ---
Parameter is not valid.
HelpLink ---

Source ---
System.Drawing
StackTrace ---
   at System.Drawing.Image.get_Width()
   at QTTabBarLib.QTabControl.DrawBackground(Graphics g, Boolean bSelected, Boolean fHot, Rectangle rctItem, Edges edges, Boolean fVisualStyle, Int32 index)
   at QTTabBarLib.QTabControl.DrawTab(Graphics g, Rectangle itemRct, Int32 index, QTabItem tabHot, Boolean fVisualStyle)
TargetSite ---
Int32 get_Width()--------------

PD: I'm the author of qttabbar-dark-mode-skin.