Could you put your vault in Restricted Mode and then restart Obsidian to ensure everything plugin-related is cleared out? (Maybe Restricted Mode already clears everything, I don’t know, but I know sometimes when disabling a single plugin it can leave things behind.)
Could you explain the problem more? I didn’t really understand what is happening. Are you pasting a selection from Word that includes an image? Are you only copying text and it when you paste it you get an embedded link to an image file? Or do you just mean the text is formatted when you paste it (with bold text, etc).
You could try looking thru your plugins to see if any of them do anything with the clipboard or pasting or Word, and if so uninstall it temporarily.
Or you could copy your vault to a new folder, delete its .obsidian directory, and add back your settings and plugins. I have heard of at least 1 case where this solved a mystery problem. (If I knew more about the contents of .obsidian I might suggest a more targeted action.)
I’m sorry both of those are not very quick. At the moment I don’t have any other ideas.
@ eightning: it’s version 0.15.9
@ CawlinTeffid : i created a new vault and activated the same plugins. It’s OK now. i think you’re right. it must be something in the .obsidian folder. Didn’t deleted it. i’ll check it later. thank you very much for your help.