Running all KDE (Qt) apps on Wayland - apps bad working

Hi,
on Ubuntu 23.04 all KDE apps work not properly. When I run KDE apps (like clementine, kaffeine, smplayer), the cursor on HDPi monitor (scale 200%) is so huge than in Gnome apps. KDE apps discrespect windows decorations (like max, min, close buttons - I have them on the left site, but kde apps have it on right site). When I start smplayer, it crashes because can't play video over mplayer/mpv player...blank window and crashes.

Same problems here:
https://www.reddit.com/r/kde/comments/xev3jq/is_there_a_way_to_make_smplayermpv_work_under/

Solution for me is run KDE apps like:
QT_QPA_PLATFORM=xcb smplayer

If i try tu run application like that, everything is working properly. Can you pleas repair it on Ubuntu 23.04 for wayland?

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Uname: Linux 6.2.0-20-generic x86_64
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
BootLog: Error: [Errno 13] Operace zamítnuta: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 16 11:16:28 2023
DistUpgraded: Fresh install
DistroCodename: lunar
DistroVariant: ubuntu
DkmsStatus:
 virtualbox/7.0.6, 6.2.0-20-generic, x86_64: installed
 v4l2loopback/0.12.7, 6.2.0-20-generic, x86_64: installed (WARNING! Diff between built and installed module!)
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation HD Graphics 530 [8086:1912] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. HD Graphics 530 [1043:8694]
InstallationDate: Installed on 2023-04-14 (1 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Daily amd64 (20230414)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.2.0-20-generic root=UUID=d6cce96a-9549-40b0-8d45-aeb37eabc158 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/13/2016
dmi.bios.release: 5.11
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1805
dmi.board.asset.tag: Default string
dmi.board.name: Z170 PRO GAMING
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1805:bd05/13/2016:br5.11:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170PROGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.114-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1