There were leaves floating in the sky during stage 1 of Legacy of Lunatic Kingdom ver. 0.01a. They were removed in ver. 0.01b.

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There were leaves floating in the sky during stage 1 of Legacy of Lunatic Kingdom ver. 0.01a. They were removed in ver. 0.01b.
The Music Room unlocked status resets if you play between ver. 0.01a and ver. 0.01b of Legacy of Lunatic Kingdom.
For example, if you have a fully unlocked Music Room in ver. 0.01a, everything will be locked again when you open ver. 0.01b, showing a bunch of question marks. If you go back to ver. 0.01a, the Music Room will also show the question marks and the previously unlocked tracks are now locked again.
Similarly, if the Music Room from ver. 0.01b is fully unlocked and then you go and open ver. 0.01a, all the previously unlocked tracks will show question marks and will remain so if you return to play ver. 0.01b. You will have to hear all tracks again in the game to unlock the Music Room.
Doremy Sweet's spellcard portrait did not have a shadow in ver. 0.01a of Legacy of Lunatic Kingdom. It was added in ver. 0.01b.
The way the title screen was transitioning to one of the menu's option screens was different in ver. 0.01a of Legacy of Lunatic Kingdom. When you selected a menu option, the logo of the game from the right side of the screen would simply vanish.
This was changed in ver. 0.01b where if you selected a menu option, the logo would move to the right and fade away, similarly to how Reimu does on the left side.
Doremy’s description from the omake.txt of the full version of Legacy of Lunatic Kingdom has additional lines at the end of it:
今回はサグメの命を受けて、月の都を夢の中に再現していた。 月の都へ行こうとする者を夢の都へと繋ぎ、本物に月の都の存在を隠した。
しかし、その計画は彼女にとって迷惑であり、乗り気では無かった様である。 それにもう半年以上経つが、動きが一向に見えない。
そんな時、ついに夢の世界にやってきた者が現われた。 それは驚くことに、生身の人間だった。
月の民は人間の穢れを嫌う。 そんな人間を夢の都へ案内する訳にいかないというのが建前。 本音は、ちょっとした意趣返しだった。
彼女は人間の望み通り、本物の月の都へ送り込んだのだ。
The setup instructions (section 2) were incomplete in the readme.txt from the trial versions of Legacy of Lunatic Kingdom. The sentence started with “If it doesn't start”, but it didn’t say what to do in that case. The rest of it was missing.
It was corrected in the full version readme file, where it mentions that you have to run setup.exe if it doesn’t start.
Seiran’s description from the omake.txt of the full version of Legacy of Lunatic Kingdom has additional lines at the end of it:
延々と調査を行っていたが、一向に月の民からのゴーサインが出ない。 流石に飽き飽きしていた。
Ringo’s description from the omake.txt of the full version of Legacy of Lunatic Kingdom has additional lines at the end of it:
情報管理という役職柄、彼女は知っていた。 現在の自分達が住んでいると思っている月の都は、実は夢の世界だと言う事を。 ただし、何故そんな事態になっているのかまでは判らなかった。 もし知ってしまったら消されてしまう可能性すらあった。
自分の所に来た人間達を夢の世界の月の都へ繋がる通路へ送り込んだ。 そうやって間接的に調査しようとしたのだ。