In Help->About, one may see > Calc: CL or > Calc: threaded but not both at the same time. But this implies that these three calculation modes are exclusive. In fact, both threaded calculation and CL may be used at the same time; there is a limit of the data size at which CL is used; also there is a set of operations that CL may be used for, and multi-threaded calculation may be used for. So in the same document on the same system, some formulas may be calculated using CL, while others using threaded calculation. This means that when both CL and threaded calculations are enabled, and only CL is shown in the About, a problem that user experiences may in fact be related to threaded calc. This would not be obvious both to the user, and also to others reading a bug report with the About data provided. So I suppose that when enabled, both needs to show in Calc section. Code pointer: AboutDialog::GetMiscString in cui/source/dialogs/about.cxx
Roman Kuznetsov committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/de37cabc120b9a00ca089d1b28bc7b1958430db7 tdf#150246 Show CL and threaded in About dialog in the same time It will be available in 7.5.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.