Demoting in plain list displays asterisk as space

[Rainer Stengele <rainer.stengele@online.de>]

Hi all,

Having this item list:

- 1
- 2

with cursor in the "-2" row demoteing the item with org-shiftmetaright results in

- 1
     2

where the expected "  * 2" is displayed as "    2".
describe-char with cursor at the expected asterisk position reveals that "*" is displayed as space:

-------------------------------------------------------------------------
             position: 7 of 10 (60%), column: 2
             character: * (displayed as *) (codepoint 42, #o52, #x2a)
     preferred charset: ascii (ASCII (ISO646 IRV))
code point in charset: 0x2A
                script: latin
                syntax: _ 	which means: symbol
              category: .:Base, a:ASCII, l:Latin, r:Roman
              to input: type "C-x 8 RET 2a" or "C-x 8 RET ASTERISK"
           buffer code: #x2A
             file code: #x2A (encoded by coding system utf-8-dos)
               display: composed to form "*" (see below)

Composed by the rule:
	(? )
The component character(s) are displayed by these fonts (glyph codes):
   : uniscribe:-outline-DejaVu Sans Mono-normal-normal-normal-mono-12-*-*-*-c-*-iso8859-1 (#x03)
See the variable ‘reference-point-alist’ for the meaning of the rule.

Character code properties: customize what to show
   name: ASTERISK
   general-category: Po (Punctuation, Other)
   decomposition: (42) ('*')

There are text properties here:
   composition          [Show]
   fontified            t
   keymap               [Show]
   line-prefix          ""
   mouse-face           highlight
   wrap-prefix          [Show]
-------------------------------------------------------------------------

Demoting once more results in:
- 1

     +

I cannot seem to find the reason why the "*" is displayed as empty char (space).
I already found out that there are no overlays at that point.
Does anybody have a hint?

Thank you.
Regards, Rainer