The letters are almost not shuffled initially

Hello!
I noticed that the initial shuffling of the letters in the puzzles is different from what the "randomize" button does, and often it leaves the letters almost untouched. It often makes the puzzles too easy, just obvious.

Example: https://tinyurl.com/t774ktn3
The source phrase starts from "Then there's a phrase that became the title, of course".
After initial shuffling, it becomes "Then theue'r o whuore thot beyome the tstle, ic yigure".
"t", "h", "e", "m", "l" remained the same letters.

If the point of making the initial shuffling different from the "randomize" button is to make it consistent between the page loads (so that everyone gets the "same puzzle"), then using a randomizer with pre-defined seed will do.