Hi,
I manually added the Battle.net Launcher to Steam.
Until a few weeks ago (I can't pinpoint the exact time anymore—it might have been 2–3 months ago), I was playing “Diablo II: Resurrected™ – Reign of the Warlock” using Proton Experimental. To do this, I launched the Battle.net Launcher via Proton on Steam and then launched D2RW through the Battle.net Launcher.
Suddenly, small rectangular bars started appearing in the game. They keep multiplying as I play. See the YouTube link below.
I’ve tried various versions of Proton. Proton 10.0-4 still works perfectly fine. Strangely enough, Proton 11 also has the black bars, even though the Experimental version—as I mentioned—wasn’t affected a few weeks ago.
Translated with DeepL.com (free version)
lspci -k | grep -EA3 'VGA|3D|Display'
07:00.0 VGA compatible controller: Intel Corporation Battlemage G21 [Arc B580]
Subsystem: Sparkle Computer Co., Ltd. Device 4215
Kernel driver in use: xe
Kernel modules: xe
OS: Fedora Linux 44 (KDE Plasma Desktop Edition) x86_64
Mainboard: B550 AORUS ELITE V2
Kernel: Linux 7.1.5-200.fc44.x86_64
Packages: 20 (flatpak-system), 37 (flatpak-user), 3618 (rpm)
Shell: bash 5.3.9
Display (GD245HQ A): 1920x1080 in 24", 60 Hz [External]
Display (S24C350): 1920x1080 in 24", 60 Hz [External]
Display (KG241Q S): 1920x1080 in 24", 165 Hz [External] *
DE: KDE Plasma 6.7.3
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt], Blue-Submarine [GTK2/3/4]
Icons: buuf-icons-for-plasma [Qt], breeze-dark [GTK2], buuf-icons-for-plasma [GTK3/4]
Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK2/3/4]
Cursor: microzoa (24px)
Terminal: konsole 26.4.3
CPU: AMD Ryzen 5 5600X (12) @ 3.70 GHz
GPU: Intel Arc B580 @ 2.85 GHz [Discrete]
Memory: 12.17 GiB / 62.71 GiB (19%)
Swap: 0 B / 8.00 GiB (0%)
Disk (/): 644.88 GiB / 1.82 TiB (35%) - btrfs
Locale: de_DE.utf8
Gameplay Video with black boarders, record with "GPU Screen Recorder 5.15.0"
https://youtu.be/mGhbaq86W8Q
Thank you

Hi,
I manually added the Battle.net Launcher to Steam.
Until a few weeks ago (I can't pinpoint the exact time anymore—it might have been 2–3 months ago), I was playing “Diablo II: Resurrected™ – Reign of the Warlock” using Proton Experimental. To do this, I launched the Battle.net Launcher via Proton on Steam and then launched D2RW through the Battle.net Launcher.
Suddenly, small rectangular bars started appearing in the game. They keep multiplying as I play. See the YouTube link below.
I’ve tried various versions of Proton. Proton 10.0-4 still works perfectly fine. Strangely enough, Proton 11 also has the black bars, even though the Experimental version—as I mentioned—wasn’t affected a few weeks ago.
Translated with DeepL.com (free version)
Gameplay Video with black boarders, record with "GPU Screen Recorder 5.15.0"
https://youtu.be/mGhbaq86W8Q
Thank you