2 random audio loop player questions

[rzrsharpeprod]

I have just updated to Hise 4.0 and imported my project from 3.62 but I am now having an issue with loading audio files into the loop player.
Previously I could either right click to load or drag and drop a file onto the audio waveform in the UI to load a file.
Since I have updated, I can still right click to load a file but it won't let me drag and drop anymore, I get the circle with a diagonal line through it, I can see that there are some newer features on the loop player in 4.0 such as left click to load etc but I can't seem to find a setting to allow drag and drop. Previously it was on by default.

The 2nd question is about this symbol
I have 2 loop players & 2 audio waveforms that are set up the same parameter wise but one has this symbol in the top left hand corner and the other one doesn't and I can't figure out why.
I'm happy to either have it on for both or off for both (as long as it doesn't affect any functionality) but I can't figure out where it can be turned on/off.

Thanks in advance