KDevelop 5.5.2 crashes with -std=c++2a switch set, after entering line '#include <memory>'.

1. Create a new Standard Terminal CMake C++ Debug project
2. Set the 'CMAKE_CXX_FLAGS' parameter to '-std=c++2a'.
3. Enter the following line in main.cpp: '#include <memory>'

KDevelop crashes with segmentation fault.

Operating System: openSUSE Tumbleweed 20200603
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
Kernel Version: 5.6.14-1-default
OS Type: 64-bit

5.5.1 was OK. Does anyone experience the same?
Thanks.

Bug reports should be made on https://bugs.kde.org, the forum is definitely the wrong place for this