Non-selectable characters amidst text

In the image below you can see that two kanji within the selction range have not been selected or copied into the RichText edit widget to the right.
[Image: non-selectable_chars_sqr_750.png]

[Image: non-selectable_chars_sqr_750.png]

Here is the data for the first rows of displayed :

Code:
{krow "0014","0000",'〇'}

{krow "0002","2850",'一'}

{krow "0003","1688",'ニ'}

{krow "0437","2851",{on-yomi-only {CharGraphic '丁'}}}

{krow "0009","2854",{CharGraphic '七'}}

{krow "0018","2542",{on-yomi-only 万}}

{krow "0657","2885",'丈'}

{krow "0004","1689",'三'}

{krow "0041","2876",'上'}

{krow "0040","2862",'下'}

{krow "0049","2890",{on-yomi-only 不}}

{krow "0858","2887",'与'}

As you can see, two formatting fields have CharGraphic and not merely a char.
Yet this is not visible to the user, something that I am finding useful.