VM doesn't restart properly

**Describe the issue**
When my Windows 8.1 VM tries to restart, it hangs instead and lots of the following messages are printed to the console:
```console
UTM[33562:2609718] qemuHasReset, reason = guest-reset
UTM[33562:2609718] Debug JSON recieved <- {
data = {
guest = 1;
reason = "guest-reset";
};
event = RESET;
timestamp = {
microseconds = 330214;
seconds = 1613568369;
};
}
```

**Configuration**
* UTM Version: 2.0.21
* OS Version: 14.4
* Device Model: iPad Pro 11" A12X
* Is it jailbroken? No.
* How did you install UTM? **Xcode, running tethered.**

**VM Config**

QEMU Arguments export

```text
qemu-system-x86_64
-L /…/UTM.app/qemu
-S
-qmp tcp:127.0.0.1:4444,server,nowait
-spice port=5930,addr=127.0.0.1,disable-ticketing,image-compression=off,playback-compression=off,streaming-video=off
-cpu max
-smp cpus=4,sockets=1,cores=4,threads=1
-machine q35
-accel tcg,thread=multi,tb-size=384,split-wx=on
-vga qxl
-global PIIX4_PM.disable_s3=1
-global ICH9-LPC.disable_s3=1
-boot order=d
-m 1536
-soundhw hda
-name "Windows 8.1 Pro"
-device usb-ehci
-device usb-tablet
-device usb-mouse
-device usb-kbd
-drive "if=none,media=disk,id=drive0,file=/…/Documents/Windows 8.1 Pro.utm/Images/disk-0.qcow2,cache=writethrough"
-drive if=none,media=cdrom,id=drive1
-device e1000e,netdev=net0
-netdev user,id=net0
-uuid A…4
-rtc base=localtime
-device ahci,id=ahci
-device ide-drive,drive=drive0,bus=ahci.0
-device ide-drive,drive=drive1,bus=ahci.1
-vga none
-device virtio-vga
```