I can confirm that running the FSDT Live update will download and install the updated effect file for LSGG. I tried it now, by manually altering the file, and running the Live Update afterwards and, sure enough, it downloaded and restored the correct file.
Just run the update again, and it will download it. Since we use a network of servers (118 servers on Cloudflare) depending on your location, the server closest to you might not have been synchronized with all the others to get files updated very recently (we updated today, following your report), but it will, eventually.