Steps to reproduce:
1. Create new Unity project using High Definition 3D Samples Template
2. Open Tutorials window (Tutorials > Show Tutorials)
3. Select “Before You Start” tutorial
4. In Step 1 press on the Media pop-out icon in Inspector window
5. When Media Pop-out window opens, observe the Console window

Actual results: “Styles (UnityEngine.UIElements.StyleSheet)” and “Styles_Dark (UnityEngine.UIElements.StyleSheet)” messages are thrown in the Console window
Expected results: No messages are thrown in the Console window

Reproducible with versions: 5.0.3 (6000.1.0b1, 6000.1.16f1, 6000.2.15f1, 6000.3.12f1,  6000.4.1f1, 6000.5.0b1, 6000.6.0a1)

Not reproducible with versions: 6000.0.71f1

Can’t test with versions: 6000.1.0a9 (HDRP 3D Sample Template is broken when open)

Tested on (OS): macOS Silicon Tahoe 26.3.1 (M1)

Messages:
{code:java}
Styles (UnityEngine.UIElements.StyleSheet)
UnityEngine.Debug:Log (object)
MediaPopoutWindow:Popout (UnityEngine.UIElements.VisualElement) (at ./Library/PackageCache/com.unity.learn.iet-framework@ef99a8956a31/Editor/Core/MediaPopoutWindow.cs:62)
Unity.Tutorials.Core.Editor.TutorialView/<>c__DisplayClass42_0:<SetupParagraphUI>b__8 () (at ./Library/PackageCache/com.unity.learn.iet-framework@ef99a8956a31/Editor/Views/TutorialView.cs:564)
UnityEngine.GUIUtility:ProcessEvent (UnityEngine.EntityId,intptr,bool&) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:224)
{code}
{code:java}
Styles_Dark (UnityEngine.UIElements.StyleSheet)
UnityEngine.Debug:Log (object)
MediaPopoutWindow:Popout (UnityEngine.UIElements.VisualElement) (at ./Library/PackageCache/com.unity.learn.iet-framework@ef99a8956a31/Editor/Core/MediaPopoutWindow.cs:62)
Unity.Tutorials.Core.Editor.TutorialView/<>c__DisplayClass42_0:<SetupParagraphUI>b__8 () (at ./Library/PackageCache/com.unity.learn.iet-framework@ef99a8956a31/Editor/Views/TutorialView.cs:564)
UnityEngine.GUIUtility:ProcessEvent (UnityEngine.EntityId,intptr,bool&) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:224)
{code}