This was reported before in 0.16 but was said to have been fixed. Looks like it's back in 0.17.
Previous reports:
viewtopic.php?t=56440
viewtopic.php?t=54830
Expected behavior: Just keep scrolling but not load/save the previously highlighted item. Treat as lots of single clicks.
Here is my recreation of the error on loading just now with the new GUI.
[0.17.4] Double-click on Scroll Bar Confirms Load/Save
Re: [0.17.4] Double-click on Scroll Bar Confirms Load/Save
You are right, thanks for reporting. Fixed for next release. As a hotfix in the meantime you can use a single click to interact with sliders.