Google Search Experiment: Collapsed Sidebar

Google seems to be running another experiment with some users with their search engine.

These users are seeing a collapsed sidebar which opens up on clicking the existing option.

Here is a video of this experiment:

We are not sure that this one makes much sense considering the blank space on the left looks weird and to access the options you have to make too much effort every single time. Remains to be seen what version of this new experiment we might see implemented in the future.