Search is a free tool but we do have a team who work on it. Whilst they aren't dedicated to Search they do features and bug fixes.
It's working as designed but I think your point that the design is wrong is a fair one. The previous change was done so that we could meet the needs of another feature request. As you mention there is escape functionality in Search and this does use the square bracket. However, this would break in this case so the real fix to both issues is to get this working. Based on your feedback this has been added to the big board but that doesn't guarantee that a fix will be implemented. I will endeavour to keep you updated with the progress of this task.
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