I'm at 62 % of completion of "The secret of monkey Island: Special Edition" and after an animation the mouse cursor has dissappeared and I can't open the inventory of the game, neither in the classic nor in the special views. When I open the menu to save the game, see the options, etc., the cursor appears and I can use it without problem. It happened once before but I closed the game and opened it again and it started working again. However, now I try to close and open the game and it still does not work. It may be that the first time I had a saved file before the problem happened, but this time both the autosave and the manual save were done after the problem. I hope you can help me, I don't want to have to play from the beginning again. Thank you very much in advance.

Same problem here at 50% on "LeChuk's Revenge:Special Edition". Should have saved earlier :'''(

A little late to the party, but you can find savegame files at different stages of the game here:
http://www.nicouzouf.com/en/?id=thesecretofmonkeyislandspecialedition Savegames for Monkey Island 2 SE are harder to find. You can try these websites (I think both require to register an account and the second one is in German):

https://www.nextgenupdate.com/forums/ps3-trophies-game-saves/605372-monkey-island-special-editions-saveset.html
https://www.adventurespiele.net/CmodsDownload-index-req-viewdownloaddetails-lid-2297.htm