It shows up when i use latest version in steam, then i change it to the beta version but its still there? Is it normal or harmless bug or should i do something?
well, the beta version is the latest version, so i guess you can say it is up to date ;]
that text is there all the time. at that spot aseprite informs you when there are newever versions you can download. the latest final version is not going to offer you downloads of beta versions as those are for testing and with bugs, so naturally most users wouldn’t want them.