I just downloaded a trial version of html editor.

1) Opened several html files;
2) Use the Replace function to replace several typos in all the open files, so I typed in the typos, the correct words and checked the Find in "All open documents", click enter;
3) All files show the typos in all files are gone, so I clicked "Save all";

Open the file again, nothing changed! Tried more than 10 times, found that it only changes the typos of the first 3 files, the rest always remain the same no matter how hard I click "saved all"!!!

Is this what trial version do?

I don't think that's suppose to happen.

I've tried hours to test, now I got a solution even it sounds pretty stupid +_+

1) Click "Replace All" to replace all the words;
2) Click "Save All";
3) Click on any place in the file;
4) Click "Save All" again;

If step 3 and 4 are not included, it never save my file!
The files only get saved after I click on it! Sounds weird but I've tried hours for it =.=

It may be only the trial version but well done anyway neccesity the mother of invention. If you do upgrade to full please recount your results with that.
You sound like a resourceful person and would be an asset to this forum.

There have been issues with search/replace in 'all open documents' and 'look in folder...' but I thought they had been fixed. Anyway, we have reported those issues, and if not dealt with yet, they sure are on the to-do list.

'Replace all' in one and the same document should work welol though.