https://bugs.documentfoundation.org/show_bug.cgi?id=143610
--- Comment #9 from Colin <that.man.co...@gmail.com> --- I can confirm I have just clean installed Version: 7.6.2.1 (X86_64) / LibreOffice Community Build ID: 56f7684011345957bbf33a7ee678afaf4d2ba333 CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-US (en_SE); UI: en-US Calc: threaded On another computer so it's never had a profile to corrupt and still the colour formatting will not treat Zero as a "null" format and more significantly the error in the Conditional Format Management matrix is still occurring. That is to say; 1. Modify the format of H4:H24 either via the toolbar or the right-click marquee action 2. Observe that a toolbar management selection will place the marquee around the immediately preceding column data as opposed to that being selected in the matrix 3. Change the colour of the MIN value to anything noticeable 4. Accept the edited change - it's still not "nulling" zero 5. Undo the change with the toolbar "rotator" or a simple [Ctrl]+Z 6. Observe how the formatting does not return to its original status 7. Observe the corrupted first entry in the Conditional Format Management Matrix You will notice that I have now mixed and matched en-us en-uk and en_SE - Locale, language and UI. -- You are receiving this mail because: You are the assignee for the bug.