Reproduction steps:
1. Create a new project
2. Edit > Project Settings… > Graphics
3. Enter large number in Preloaded Shaders field (e.g. “999999999”)
4. Observe the Editor

Actual result: Editor crashes
Expected result: Editor doesn’t crash

Reproducible with: 6000.0.67f1, 6000.3.9f1, 6000.4.0b9, 6000.5.0a7

Reproduced on: macOS Sequoia 26.2 (M4), Windows 11

Note:

Issue is also reproducible with Always Included Shaders field
First few lines of Stack Trace:

Obtained 56 stack frames.
#0  0x000001959fb508 in _platform_memmove
#1  0x00000103fb43a8 in ResizeArrayGeneric(TypeTreeIterator const&, core::vector<unsigned char, core::allocator<unsigned char, 0ul>>&, int, int, bool, SerializedManagedReferencesIndex*, TypeTree const*)
#2  0x0000010414ebc0 in SerializedProperty::ResizeArray(int)
#3  0x0000010415713c in SerializedProperty::SetIntValue(long long)
#4  0x00000382d34bc8 in  (wrapper managed-to-native) UnityEditor.SerializedProperty:SetIntValueInternal_Injected (intptr,long) [{0x9934ae2b0} + 0x68]  (0x382d34b60 0x382d34c20) [0x17a7c2a80 - Unity Child Domain]