Hi, The issue is that when you press return, you insert a newline, with no indentation, then call =org-indent-line= which edits the block in a native buffer. This is supposed to remove any common indentation, but there is now none. Then it reinserts the code in the org-buffer, adding a new common indentation to the block.
If I recall correctly, in order to fix this, in =org-indent-line=, before calling =TAB= in the native buffer, one should check the current line indentation and if it is less than =block-content-ind=, start by adding this much indentation to the current line. This could be a bit fragile, and in particular it assumes that the rest of the block has this =block-content-ind=, which might not be the case. One could possibly at least check that the first line of the block does have this much indentation. If it doesn't, just do whatever. -- Sébastien Miquel
