Markdown cells not correctly detected and treated as SQL on opening a file

[CatalyseRichard]

When an existing file is opened the markdown cells are not reliably identified as markdown.
Some open OK but others, particularly those containing tables and/or lists (OL and UL), open as 2 SQL cells. The first cell contains the markdown text preceded by the */markdown tag. The closing */ tag appearing in a following 2nd SQL cell.
Once the cells are merged thercell type detection may recognise the correct type and there may be a suggestion to change cell type to markdown. This does not always happen and manual scrutiny and change is often required.

[NavneetSajwan]

Same issue as of 25/11/2023

[MartinR-PCS]

Same issue ...
and: one file /cloned from Git/ is rendered correctly for some VSCode instance while in others not