Steps to demonstrate:
1. Open a new Calc document
2. Turn on change tracking via Edit - Changes - Record
3. Select any cell and type something into it
4. Select this cell
5. Choose Edit - Changes - Comment and add a comment
6. Close the dialog
7. Rest your mouse pointer over the said cell

Calc will display a callout containing:
- author's first and last name, date and time of change
- comment,
- description of change.

for example:

   John Doe, 01/25/2023 19:01:06:
   comment line
   comment line
   ( Cell B5 changed from '<empty>' to '123.456')


Notice that:
(1)
There is a colon at the end of the first line/part.
Keep in mind the French might require a leading space
(":" is hardcoded...) and that Writer doesn't display
the colon in a callout.

Could the content of the callout really be misunderstood
without the colon?


(2)
there is a superfluous space after "("
in the line describing the recorded change.
The Accept or Reject Changes dialog doesn't show it.


Expected result:
no colon (1) and no space (2).


--------------------------------------

Possible source code pointer: 
/aoo41x/main/sc/source/ui/view/gridwin5.cxx 

Line 182 (colon) & 187 (space)


176    DateTime aDT = pFound->GetDateTime();
177    aTrackText  = pFound->GetUser();
178    aTrackText.AppendAscii(RTL_CONSTASCII_STRINGPARAM( ", " ));
179    aTrackText += ScGlobal::pLocaleData->getDate(aDT);
180    aTrackText += ' ';
181    aTrackText += ScGlobal::pLocaleData->getTime(aDT);
182    aTrackText.AppendAscii(RTL_CONSTASCII_STRINGPARAM( ":\n" ));
183    String aComStr=pFound->GetComment();
184    if(aComStr.Len()>0)
185    {
186        aTrackText += aComStr;
187        aTrackText.AppendAscii(RTL_CONSTASCII_STRINGPARAM( "\n( " ));
188    }
189    pFound->GetDescription( aTrackText, pDoc );
190    if(aComStr.Len()>0)
191    {
192        aTrackText +=')';
193    }