I just noticed another broken icon, but it seems to be a diffferent problem. This happens with both the latest release and this thread's beta.
Broken icons for 64bit programsBroken icons for 64bit programsThe properties window is the one opened through farr, which for the previous issue showed the broken path. This time farr actually gets the path right. The "skip some icon lookups" option is disabled. This copy of Spek (0.8.2) is installed with Chocolatey (which shouldn't make any difference).
Also, the latest release from the homepage installs 2.229.01 while the website says it'll be 2.234.01. The beta installer installs the same version number, 2.229.01.
Copying the exe to another path makes the icon work:
Broken icons for 64bit programs