The described bug still exists in LibreOffice Writer
Version: 7.0.4.2
Build ID: 00(Build:2)
CPU threads: 4; OS: Linux 5.10; UI render: default; VCL: gtk3
Locale: el-GR (el_GR.UTF-8); UI: el-GR
Debian package version: 1:7.0.4-4
Calc: threaded
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