Created attachment 116913 [details]
notificationscreenshot

SUMMARY
When confirmation dialogs (that create sounds) pop up, a notification from "Multimedia System" pops up saying "Switching to the audio playback device <whichever output is set to default when this happens> which has higher preference or is specifically configured for this stream.

STEPS TO REPRODUCE
1. Open Dolphin and select a file/folder
2. `Shift`+`Delete`
3. Confirmation dialog appears

OBSERVED RESULT
When the confirmation dialog appears, it triggers something related to output switching and a notification says it's switching the playback device back to the default/priority device.

EXPECTED RESULT
Confirmation dialogs (make noise) appear, sound plays, but nothing happens other than that. Notifications about audio device switching aren't present.

SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: openSUSE Tumbleweed 20181212 (observable in other systems though)
KDE Plasma Version: 5.14.4 (observable in earlier versions though)
KDE Frameworks Version: 5.52.0 
Qt Version: 5.11.2
Kernel Version: 4.19.7
ADDITIONAL INFORMATION
System:
  Host: schyken-ryzen-horizon Kernel: 4.19.7-1-default x86_64 bits: 64 
  compiler: gcc v: 8.2.1 Desktop: KDE Plasma 5.14.4 
  Distro: openSUSE Tumbleweed 20181212 
Machine:
  Type: Desktop Mobo: ASUSTeK model: PRIME B350-PLUS v: Rev X.0x 
  serial: <filter> UEFI: American Megatrends v: 4023 date: 08/20/2018 
CPU:
  Topology: 8-Core model: AMD Ryzen 7 2700 bits: 64 type: MT MCP 
  arch: Zen+ rev: 2 L2 cache: 4096 KiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 108592 
  Speed: 1373 MHz min/max: 1550/3400 MHz Core speeds (MHz): 1: 1373 
  2: 1371 3: 1372 4: 1373 5: 1375 6: 1374 7: 1374 8: 1373 9: 1373 
  10: 1372 11: 1375 12: 1373 13: 1375 14: 1371 15: 1373 16: 1374 
Graphics:
  Device-1: AMD Vega 10 XL/XT [Radeon RX Vega 56/64] vendor: ASUSTeK 
  driver: amdgpu v: kernel bus ID: 0c:00.0 
  Display: x11 server: X.org 1.20.3 driver: ati,modesetting 
  unloaded: fbdev,vesa resolution: <xdpyinfo missing> 
  OpenGL: 
  renderer: Radeon RX Vega (VEGA10 DRM 3.27.0 4.19.7-1-default LLVM 6.0.1) 
  v: 4.5 Mesa 18.1.7 direct render: Yes 
Audio:
  Device-1: Creative Labs Sound Core3D [Sound Blaster Recon3D / Z-Series] 
  driver: snd_hda_intel v: kernel bus ID: 09:00.0 
  Device-2: AMD driver: snd_hda_intel v: kernel bus ID: 0c:00.1 
  Device-3: AMD Family 17h HD Audio vendor: ASUSTeK driver: snd_hda_intel 
  v: kernel bus ID: 0e:00.3 
  Device-4: Logitech HD Pro Webcam C920 type: USB 
  driver: snd-usb-audio,uvcvideo bus ID: 3-1:2 
  Device-5: C-Media Blue Snowball type: USB 
  driver: hid-generic,snd-usb-audio,usbhid bus ID: 1-2:2 
  Sound Server: ALSA v: k4.19.7-1-default 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: ASUSTeK driver: r8169 v: kernel port: f000 bus ID: 04:00.0 
  IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:
  Local Storage: total: 2.08 TiB used: 43.45 GiB (2.0%) 
  ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 960 EVO 250GB 
  size: 232.89 GiB 
  ID-2: /dev/sda vendor: Western Digital model: WDS500G2B0A-00SM50 
  size: 465.76 GiB 
  ID-3: /dev/sdb vendor: Western Digital model: WDS500G2B0A-00SM50 
  size: 465.76 GiB 
  ID-4: /dev/sdc vendor: Western Digital model: WDS500G2B0A-00SM50 
  size: 465.76 GiB 
  ID-5: /dev/sdd vendor: Western Digital model: WDS500G2B0A-00SM50 
  size: 465.76 GiB 
  ID-6: /dev/sdf type: USB vendor: Kingston model: DTR30G2 
  size: 29.30 GiB 
Partition:
  ID-1: / size: 203.40 GiB used: 18.13 GiB (8.9%) fs: btrfs 
  dev: /dev/nvme0n1p5 
  ID-2: /boot size: 1.45 GiB used: 53.5 MiB (3.6%) fs: ext4 
  dev: /dev/nvme0n1p4 
  ID-3: /home size: 203.40 GiB used: 18.13 GiB (8.9%) fs: btrfs 
  dev: /dev/nvme0n1p5 
  ID-4: /opt size: 203.40 GiB used: 18.13 GiB (8.9%) fs: btrfs 
  dev: /dev/nvme0n1p5 
  ID-5: /tmp size: 203.40 GiB used: 18.13 GiB (8.9%) fs: btrfs 
  dev: /dev/nvme0n1p5 
  ID-6: /var size: 203.40 GiB used: 18.13 GiB (8.9%) fs: btrfs 
  dev: /dev/nvme0n1p5 
Sensors:
  System Temperatures: cpu: 28.2 C mobo: N/A gpu: amdgpu temp: 30 C 
  Fan Speeds (RPM): cpu: 0 gpu: amdgpu fan: 1230 
Info:
  Processes: 373 Uptime: 4h 30m Memory: 31.41 GiB used: 1.95 GiB (6.2%) 
  Init: systemd runlevel: 5 Compilers: gcc: 8.2.1 Shell: bash v: 4.4.23 
  inxi: 3.0.28