patch: prefer gtk3_kde5 over kde5 because of maturity of gtk3 rendering

gtk3_kde5-priority.patch

@@ -0,0 +1,21 @@
+--- libreoffice-6.3.5.2/vcl/source/app/salplug.cxx.orig2	2020-04-04 20:44:52.950045617 +0300
++++ libreoffice-6.3.5.2/vcl/source/app/salplug.cxx	2020-04-04 20:44:55.713958634 +0300
+@@ -151,12 +151,15 @@
+ {
+     static const char* const pKDEFallbackList[] =
+     {
+-#if ENABLE_KDE5
+-        "kde5",
+-#endif
+ #if ENABLE_GTK3_KDE5
++// prefer gtk3_kde5 over kde5 because of maturity of gtk3 rendering;
++// based on kde4 vcl experience, I don't trust kde5 VCL,
++// and other people wrote about problems in it //mikhailnov
+         "gtk3_kde5",
+ #endif
++#if ENABLE_KDE5
++        "kde5",
++#endif
+         "gtk3", "gtk", "gen", nullptr
+     };
+ 

libreoffice.spec

@@ -45,7 +45,7 @@ Summary:	Office suite
 Name:		libreoffice
 Epoch:		1
 Version:	6.3.5
-Release:	6
+Release:	7
 License:	(MPLv1.1 or LGPLv3+) and LGPLv3 and LGPLv2+ and BSD and (MPLv1.1 or GPLv2 or LGPLv2 or Netscape) and Public Domain and ASL 2.0 and Artistic
 Group:		Office
 Url:		http://www.libreoffice.org
@@ -95,6 +95,8 @@ Patch2:		libreoffice-6.3.5.2-kde4-detection.patch
 Patch3:		6fbfad6b00e8c35346ee59cd32a0d7ccc0d8c19c.patch
 # For Clang <9, GCC <10, when building with libstdc++-gcc10
 Patch4:		span-old-compilers.patch
+# prefer gtk3_kde5 over kde5 because of maturity of gtk3 rendering
+Patch5:		gtk3_kde5-priority.patch
 
 # ROSA vendor patch
 Patch100:	libreoffice-4.1-vendor.patch