How to reproduce:
1. Create and open a new HDRP project
2. In the Assets folder, right-click → Create → Visual Effects → Visual Effect Graph
3. Select the “Minimal System” option
4. Double-click the created Visual Effect Graph to open its tab
5. Right-click the Project tab and try to maximize it
6. Observe the crash

Reproducible with: 6000.0.45f1, 6000.0.61f1, 6000.2.0b2, 6000.2.10f1
Not reproducible with: 6000.3.0b8, 6000.4.0a3
Could not test with: 2023.1.0a1, 6000.0.44f1 (VFX Graph Window does not open)
Fixed in: 6000.3.0a1

Reproducible on: Ubuntu 22.04
Not reproducible on: Windows 11

First lines of the stack trace:
#2 0x006198f804afd8 in AuxWindowManager::OnGotFocus(ContainerWindow)
#3 0x006198f80eebb9 in OnGUIViewFocusIn(GUIView, _GdkEvent)
<…>
#27 0x006198f80f5c00 in ForceGtkWidgetUpdates(_GtkWidget)
#28 0x006198f80b0cb8 in ModalProgressBackendLinux::Update(bool, float, core::basic_string_ref<char>, core::basic_string_ref<char>, bool, bool)
#29 0x006198f7e938bb in UpdateProgressBarState(bool)
#30 0x006198f7e9509e in DisplayProgressbarLegacy(core::basic_string_ref<char>, core::basic_string_ref<char>, float, bool)
#31 0x006198f6079eb1 in EditorUtility_CUSTOM_DisplayProgressBar(BindingsManagedSpan, BindingsManagedSpan, float)