Drag'n'drop of audio files not working in waveform editor

OS: Windows 10 x64
DAW: Standalone/REAPER
Vital version: 1.5.5

When the waveform editor is open, the window appears to accept waveform files dropped from Windows Explorer. However, it doesn’t work. Only using the import menu does.

vsdd

I didn’t know that was an option, i always thought the audio files were dragged and dropped from the main view onto the wavetable window. probably a good feature request though.