It has been confirmed that replays created with versions earlier than "ver.1.1.3" may not play back correctly in "ver.1.2.0".
As noted in the manual, "Replays may not play correctly if the version differs." Therefore, we do not guarantee compatibility between different replay versions.
Since changes to the scripting structure can alter random number outcomes, we believe that the addition of the Boss Rush feature in this case is affecting replay playback.
Solution
To address this, we have added the previous version "ver.1.1.3" as a beta option.
(For reasons of save compatibility, the file will be deleted after a certain period of time. Please understand this in advance.)
You can switch to the older version by following these steps:
Properties → Betas → ver.1.1.3
If you wish to replay recordings created in "ver.1.1.3" or earlier, please temporarily switch to this version.
Additionally, if you want to ensure your current replays are preserved, we recommend recording them as video files.