helm-gtags unable to find remote files when 'tramp-remote-path is set

[salmr0]

When I add a directory to the remote path on tramp via (add-to-list 'tramp-remote-path "~/opt/bin")
helm-gtags-dwim no longer realizes that the files are remote and assumes they are local.

I get this error message:
helm-gtags--find-tag-from-here-init: Error: /home/rsalmon/src/ior-3.0.1/src/ior.c

emacs 26.1 on OS X local host and linux remote host.

[syohex]

Sorry late reply. However I cannot reproduce. I suppose it is helm-gtags bug if you install GNU global under /usr/local instead of ~/opt/bin then it works.