Mono crashes for trying to print an emoji in Keepass2 (I guess)

[yannl35133]

Steps to Reproduce

1. Create a database (or download my test one database.tar.gz: password is empty)
2. Try to insert an emoji (I tried with 🏁) in a field for a new entry
3. Or, conversely, open the database in (native) Windows / with another software, add an entry with an emoji, save, and try to open the folder in Linux/Keepass

Current Behavior

Crashes, see stacktrace below

Expected Behavior

Not crash, at least by not trying to draw emoji if it cannot

On which platforms did you notice this

[ ] macOS
[x] Linux: Kubuntu 19.10
[ ] Windows

Version Used: 6.4.0.198 (and also the version live from Ubuntu's ppa)

Stacktrace

Opening a database with an entry containing 🏁 (Trying to put 🏁 in a field creates the same trace, along with another exception which, from a quick look, is caused by the window not being available after it closed)

~$ mono /lib/keepass2/KeePass.exe --debug
System.Exception: Generic Error [GDI+ status: GenericError]
  at System.Drawing.GDIPlus.CheckStatus (System.Drawing.Status status) [0x00079] in <954bb0211179498a9465d5f89b2a3d40>:0 
  at System.Drawing.Graphics.FillRectangle (System.Drawing.Brush brush, System.Int32 x, System.Int32 y, System.Int32 width, System.Int32 height) [0x00025] in <954bb0211179498a9465d5f89b2a3d40>:0 
  at System.Drawing.Graphics.FillRectangle (System.Drawing.Brush brush, System.Drawing.Rectangle rect) [0x0002c] in <954bb0211179498a9465d5f89b2a3d40>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Graphics.FillRectangle(System.Drawing.Brush,System.Drawing.Rectangle)
  at System.Windows.Forms.ThemeWin32Classic.DrawListViewSubItem (System.Drawing.Graphics dc, System.Windows.Forms.ListView control, System.Windows.Forms.ListViewItem item, System.Int32 index) [0x0017e] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.ThemeWin32Classic.DrawListViewSubItems (System.Drawing.Graphics dc, System.Windows.Forms.ListView control, System.Windows.Forms.ListViewItem item) [0x00022] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.ThemeWin32Classic.DrawListViewItems (System.Drawing.Graphics dc, System.Drawing.Rectangle clip, System.Windows.Forms.ListView control) [0x0007b] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.ListView+ItemControl.OnPaintInternal (System.Windows.Forms.PaintEventArgs pe) [0x00011] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.Control.WmPaint (System.Windows.Forms.Message& m) [0x0006d] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m) [0x001a4] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.ListView+ItemControl.WndProc (System.Windows.Forms.Message& m) [0x00071] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.Control+ControlWindowTarget.OnMessage (System.Windows.Forms.Message& m) [0x00000] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.Control+ControlNativeWindow.WndProc (System.Windows.Forms.Message& m) [0x0000b] in <7346aaf818a24e898fc55461ebf690ad>:0 
  at System.Windows.Forms.NativeWindow.WndProc (System.IntPtr hWnd, System.Windows.Forms.Msg msg, System.IntPtr wParam, System.IntPtr lParam) [0x00085] in <7346aaf818a24e898fc55461ebf690ad>:0

[yannl35133]

I first filed a bug on Keepass' sourceforge, I was told it was Mono's fault.

[yannl35133]

The bug is still present on version 6.8.0.105

[luminoso]

Same. I've reported to keepass here and I was redirected to this bug. Is there any information that I can add to help to solve this issue?

$ mono --version
Mono JIT compiler version 6.10.0.104 (tarball Fri Jun 26 20:45:56 UTC 2020)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
        TLS:           __thread
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none
        Misc:          softdebug 
        Interpreter:   yes
        LLVM:          yes(610)
        Suspend:       hybrid
        GC:            sgen (concurrent by default)