`show_documentation()` issue in coc with latest preview version `1.15.0~5.0preview1` and `merlin 4.7.1-500`

[crackcomm]

I recently tried the latest preview version of ocaml-lsp, 1.15.0~5.0preview1, with merlin 4.7.1-500 and encountered an issue with the show_documentation() feature in coc. When I try to get documentation for an element in a function or module, the whole outer body is highlighted and shows the 'a type. In addition, features like go to definition do not work on the preview version.

I also tried the commit ac6569c and found that it appears to be improved, as I no longer get ppx-es highlighter errors after saving the file.

If there is anything I can do to assist in debugging this issue, please let me know. I appreciate the great work on the LSP.