Erasure of palette search string in 3.3 is much more inefficient (time-consuming) than 3.2.3
Of course it can be claimed that this is not-important, as it's only about 1.5 seconds of "frozen", but those who use palette searching quickly (self included) will more than likely find this a bother, even if it is only a few seconds, especially since 3.2.3 had no such delay.
To be more precise: deleting the text within palette searching is not snappy enough as it was in 3.2.3, and not only as in backspacing the text, but also with a quick CTRL+A and then backspace to clear the textbox. This was practically instantaneous in 3.2.3.
Here is a quick demonstration:
There is no delay from highlighting the text in the search box via [ctrl+a] and pressing [backspace] on a keyboard, so the time that it shows the search-text highlighted is all some sort of inefficient "calculation" in 3.3.2.
Although I wouldn't call this a major bug, it's not merely just a "suggestion", as it ought to be looked into when time allows as to what is happening to warrant such a 'frozen' moment for the user.