I'll leave my computer on with the lid shut, with Discord on, for hours at a time. When I open the lid back up, every single text since I was last on gets a notification. Every. Single. Individual. Text. Discord must put them in some kind of queue, sent out to be shown when I open the lid back up, because muting the offending servers or Discord itself doesn't stop them. I can't shut Discord down because I can't access that part of the toolbar because it's constantly getting blocked by a notification for every single text. 50 texts? 50 notifications. The only way to stop them is to let them run or doing a hard reboot of my computer itself.
Whatever part of the notification code is doing this, please make it stop. I'm running Windows 10.