The usual side effects of drug addiction would explain certain things, like the “Don’t wake Der Fuhrer, news of the Allied landings in Normandy can wait!” incident.
I thought the same thing. Also, when Karl Wolff was called back to meet Himmler and Hitler. Himmler and others wanted to have Wolff executed right then, because they knew he was going to surrender to the Allies. Hitler was out of it (according to Wolff), and he let Wolff return to command. (Where he greatly aided the Allies by surrendering)