It has also been reported in upstream.
https://github.com/SavchenkoValeriy/emacs-powerthesaurus/issues/11
pressing SPC s T on emacs, doesn't show any user feedback, no error or message at all on the messages buffer or mini-buffer.
As of 27c64a3 this issue should be resolved. I'll keep this open until it is resolved upstream and we can revert back to the source package. Thanks for bringing it to my attention!
Hi. The original upstream repo has been updated so there is no longer a need for pulling from the fork.
Great! @maxchaos Thanks for letting me know!