Created attachment 167358 [details]
Orginization Structure Chart.xlsx
The attached XLSX file contains a smartart. When open in Calc, it shows blank, although we can still observe that there is a drawing object in the navigator.
Created attachment 167359 [details]
Organization Struture Chart.pdf (MSO 2010)
Reproduced on Fedora 32, LibreOffice 6.4.7 and master.
Also in 22.214.171.124.alpha1+
Build ID: 9bc848cf0d301aa57eabcffa101a1cf87bad6470
Build ID: 0979798658ff536defe537f57cc6b32278d32414
CPU threads: 4; OS: Linux 5.7; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Build ID: 5b168b3fa568e48e795234dc5fa454bf24c9805e
CPU Threads: 4; OS Version: Linux 4.8; UI Render: default;
Locale: ca-ES (ca_ES.UTF-8)
Build ID: c15927f20d4727c3b8de68497b6949e72f9e6e9e
Seems related to bug 83671, possibly duplicate, but hard to know at this stage.