Dear Maintainer, Krita 4.4.2 on Bullseye crashes most of the time when I try to apply Gaussian Blur or any other filter on a transparency mask unless I disable the preview option. It happens when I try to apply other filters as well. I have tested it by installing Krita on a fresh Debian Bullseye on a virtual machine as well and it happens there as well. Here is the console output of Krita when the crash occurs. safi@safi-pc:~$ krita (process:12176): Gtk-WARNING **: 12:27:33.157: Locale not supported by C library. Using the fallback 'C' locale. Invalid profile : "/usr/share/color/icc/colord/Crayons.icc" "Crayon Colors" Invalid profile : "/usr/share/color/icc/colord/x11-colors.icc" "X11 Colors" Could not set current file 0 "brushes/rake_sparse.png" krita.general: Bundle is broken. File "brushes/rake_sparse.png" is missing Could not set current file 0 "brushes/rock_pitted.gih" krita.general: Bundle is broken. File "brushes/rock_pitted.gih" is missing Could not set current file 0 "brushes/square_rough.png" krita.general: Bundle is broken. File "brushes/square_rough.png" is missing krita.general: Due to missing files and wrong entries in the manifest, "/usr/share/krita/bundles/RGBA_brushes.bundle" will be recreated. QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/Craig_02.png" 0 krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/DA_RGBA bluegreen_small.png" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/DA_RGBA bluegreen_small1.png" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/DA_Triangle grain.png" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/Mountain_Brush_01.png" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "brushes/RGBA anim 01.gih" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing Could not set current file 0 "brushes/rake_sparse.png" Could not set current file 0 "brushes/rock_pitted.gih" Could not set current file 0 "brushes/square_rough.png" QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_01_Thick-dry.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_02_Thickpaint.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_03_Rake.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_04_Impasto.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_05_Impasto-details.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "paintoppresets/m)_RGBA_06_Rock.kpp" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "preview.png" 0 QBuffer::setBuffer: Buffer is open krita.general: Could not open preview.png krita.lib.store: KoStore: You must open before writing krita.general: Could not write preview.png krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "META-INF/manifest.xml" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZipFile::open(): file open mode 2 incompatible with ZIP open mode 0 Could not open "meta.xml" 0 QBuffer::setBuffer: Buffer is open krita.lib.store: KoStore: You must open before writing krita.lib.store: You must open before closing QuaZip::close(): ZIP is not open Could not remove "/usr/share/krita/bundles/RGBA_brushes.bundle" "Permission denied" Could not copy the tmp file to the store "/usr/share/krita/bundles/RGBA_brushes.bundle" "/usr/share/krita/bundles/RGBA_brushes.bundle.tmp" false "Destination file exists" qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point QPngHandler: Failed to parse ICC profile QObject::startTimer: Timers cannot have negative intervals /usr/lib/x86_64-linux-gnu/krita-python-libs/krita added to PYTHONPATH QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout Segmentation fault