See comment in gnu/build/icecat-extension.scm.

--- a/toolkit/mozapps/extensions/internal/XPIDatabase.jsm
+++ b/toolkit/mozapps/extensions/internal/XPIDatabase.jsm
@@ -3452,6 +3452,7 @@ const XPIDatabaseReconcile = {
     if (
       newAddon ||
       oldAddon.updateDate != xpiState.mtime ||
+      oldAddon.path != xpiState.path ||
       (aUpdateCompatibility && this.isAppBundledLocation(installLocation))
     ) {
       newAddon = this.updateMetadata(
@@ -3460,8 +3461,6 @@ const XPIDatabaseReconcile = {
         xpiState,
         newAddon
       );
-    } else if (oldAddon.path != xpiState.path) {
-      newAddon = this.updatePath(installLocation, oldAddon, xpiState);
     } else if (aUpdateCompatibility || aSchemaChange) {
       newAddon = this.updateCompatibility(
         installLocation,