--- a/gfx/gl/GLContext.cpp
+++ b/gfx/gl/GLContext.cpp
@@ -2874,23 +2874,24 @@ void GLContext::AfterGLCall_Debug(const 
   }
 
   if (mDebugFlags & DebugFlagTrace) {
     printf_stderr("[gl:%p] < %s [%s]\n", this, funcName,
                   GLErrorToString(err).c_str());
   }
 
   if (err && !mLocalErrorScopeStack.size()) {
-    printf_stderr("[gl:%p] %s: Generated unexpected %s error.\n", this,
-                  funcName, GLErrorToString(err).c_str());
-
-    if (mDebugFlags & DebugFlagAbortOnError) {
-      MOZ_CRASH(
-          "Unexpected error with MOZ_GL_DEBUG_ABORT_ON_ERROR. (Run"
-          " with MOZ_GL_DEBUG_ABORT_ON_ERROR=0 to disable)");
+    const auto errStr = GLErrorToString(err);
+    const auto text = nsPrintfCString("%s: Generated unexpected %s error", funcName, errStr.c_str());
+    printf_stderr("[gl:%p] %s.\n", this, text.BeginReading());
+
+    const bool abortOnError = mDebugFlags & DebugFlagAbortOnError;
+    if (abortOnError && err != LOCAL_GL_CONTEXT_LOST) {
+      gfxCriticalErrorOnce() << text.BeginReading();
+      MOZ_CRASH("Aborting... (Run with MOZ_GL_DEBUG_ABORT_ON_ERROR=0 to disable)");
     }
   }
 }
 
 /*static*/
 void GLContext::OnImplicitMakeCurrentFailure(const char* const funcName) {
   gfxCriticalError() << "Ignoring call to " << funcName << " with failed"
                      << " mImplicitMakeCurrent.";