Error when embedding 'Find the Words' puzzle

 

I created a wordsearch puzzle using the 'Find the Words' template.

Works fine in the editor preview, but when embedding in Wordpress I cannot select any word that appears in the top row of the grid.

No problem selecting words anywhere else in the grid, but in the top row I can begin the highlighting, but it won't let me click to finish at the end of the word.

Using Chrome Version 139.0.7258.155, Windows 11 laptop.

I used the provided shortcode to embed in wordpress [h5p id="246"]. Grab shows highting starts ok, but cannot make final click to complete word.