Created attachment 711999 [details]
Zypper output (installed packages harfbuzz/plasma, libharfbuzz info)

Hi,

since I updated my Tumbleweed system yesterday, Plasma doesn't come up again.
When the loading screen is supposed to appear, a textbox with the following
text appears instead:

startkde: Could not start kdeinit5. Check your installation.

The reason for this seems to be related to the harfbuzz package. The following
can be found in .xsession-errors:

marco@opensuse ~ % cat .xsession-errors-:0
Loading stage  "initial" 140
startkde: Starting up...
/usr/bin/kdeinit5: symbol lookup error: /usr/lib64/libharfbuzz.so.0: undefined
symbol: FT_Get_Var_Blend_Coordinates
startkde: Could not start kdeinit5. Check your installation.

I attach the output of some zypper commands showing the currently installed
versions of related packages.