Yocto build fails in CI for 6.2.0-beta4 qtbase

Yocto build fails in CI for 6.2.0-beta qtbase with error:

CMake Error at /home/qt/work/build/build/tmp/work/core2-64-poky-linux/qtbase/6.2.0-r0/recipe-sysroot-native/usr/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:2063 (add_library):
agent:2021/09/02 10:28:13 build.go:391: | Cannot find source file:
agent:2021/09/02 10:28:13 build.go:391: |
agent:2021/09/02 10:28:13 build.go:391: | /home/qt/work/build/build/tmp/work/core2-64-poky-linux/qtbase/6.2.0-r0/build/examples/widgets/tools/plugandpaint/plugins/basictools/pnp_basictools_init.cpp

Full log: https://testresults.qt.io/coin/api/results/yocto/meta-qt6/2db3e404322b9d54269263607841e3aaa7fc2c64/LinuxUbuntu_20_04x86_64LinuxUbuntu_20_04target4Yoctoqtci-linux-Ubuntu-20.04-x86_64-50-4dbcc4/79f9d76f6ee7858e0afe4597dfddfa94b848e81e/build_1630580068/log.txt.gz