diff --git a/.github/workflows/full-ci.yml b/.github/workflows/full-ci.yml
index 5e61f224c..c3c136a11 100644
--- a/.github/workflows/full-ci.yml
+++ b/.github/workflows/full-ci.yml
@@ -265,14 +265,17 @@ jobs:
 
           # Don't use latest Ubuntu (22.04) as it breaks lots of ecosystem compatibility.
           # If ever moving to ubuntu-latest, need to manually install libtinfo5 for LLVM.
-          - name: linux
+
+          # Uses full+experimental codegen, so that compatibility breakage towards nightly is detected.
+          # If the experimental part causes problems, consider using only godot/codegen-full.
+          - name: linux-full
             os: ubuntu-20.04
-            artifact-name: linux-nightly
+            artifact-name: linux-full-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
-            rust-extra-args: --features godot/custom-godot
+            rust-extra-args: --features codegen-full-experimental
 
           # Combines now a lot of features, but should be OK. lazy-function-tables doesn't work with experimental-threads.
-          - name: linux-double-full-lazy
+          - name: linux-double-lazy
             os: ubuntu-20.04
             artifact-name: linux-double-nightly
             godot-binary: godot.linuxbsd.editor.dev.double.x86_64
diff --git a/.github/workflows/minimal-ci.yml b/.github/workflows/minimal-ci.yml
index 41f304678..fd9a38c8c 100644
--- a/.github/workflows/minimal-ci.yml
+++ b/.github/workflows/minimal-ci.yml
@@ -145,11 +145,11 @@ jobs:
 
           # Linux
 
-          - name: linux
+          - name: linux-full
             os: ubuntu-20.04
             artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
-            rust-extra-args: --features godot/custom-godot
+            rust-extra-args: --features codegen-full-experimental
 
           - name: linux-features
             os: ubuntu-20.04
diff --git a/godot-codegen/src/special_cases/special_cases.rs b/godot-codegen/src/special_cases/special_cases.rs
index 4b371985f..575ecb909 100644
--- a/godot-codegen/src/special_cases/special_cases.rs
+++ b/godot-codegen/src/special_cases/special_cases.rs
@@ -41,6 +41,11 @@ pub fn is_class_method_deleted(class_name: &TyName, method: &JsonClassMethod, ct
         //| ("Object", "to_string")
         | ("Object", "get_instance_id")
 
+        // Removed in https://github.com/godotengine/godot/pull/88418, but they cannot reasonably be used before, either.
+        | ("GDExtension", "open_library")
+        | ("GDExtension", "initialize_library")
+        | ("GDExtension", "close_library")
+
         // Thread APIs
         | ("ResourceLoader", "load_threaded_get")
         | ("ResourceLoader", "load_threaded_get_status")