René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Code disappearing when editor opens","articleBody":"When I open a file for the first time, I sometimes see that lines of code have been randomly erased.   CTRL-Z does not revert this, so it is not something caused by any user interaction with the program.  The line numbers show that something used to be there, and the erasures don't line up neatly with lines--for example, the end of line 7, all of lines 8-19, and the beginning of line 20 were deleted in one program. \n\nThis has happened enough times that it seems to be a systemic error. This never happened to me with the Glowscript editor.  It is very frustrating, as there is no backup (as far as I know), so I have no way to restore the programs affected. \n\nExample program where this has happened: \nhttps://flaskdstorehost-dhppn6xgeq-uc.a.run.app/#/user/HG_NY/folder/FileWork/program/AddressBook/edit\n\nI don't suppose you have any version history on your end to check when the change happened?  ","author":{"url":"https://github.com/Waldorf-Techie","@type":"Person","name":"Waldorf-Techie"},"datePublished":"2025-04-03T15:53:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/11/flaskHost/issues/11"}