I was pleasantly surprised to find out that StringTemplate appears to work with styled (formatted) strings, with the style of the slots applied to the inserted expressions:

![enter image description here][1]

(The string was formatted using the Format menu.)

However upon converting that output to an input cell, by placing the cursor at the end of the line and pressing Enter, an error results:

INTERNAL SELF-TEST ERROR: MathEditCells2|c|1411
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Is this usage intended and the error a bug, or should this not be attempted? [1]: https://i.sstatic.net/L4abz.png

I was pleasantly surprised to find out that StringTemplate appears to work with styled (formatted) strings, with the style of the slots applied to the inserted expressions:

(The string was formatted using the Format menu.)

Is this usage intended or documented?