How to fix disappearing the end of my text that add on a PDF ?

No, it is a recent problem. They already talk about it on another Chanel. They still are searching about the solution (on edge)

It looks like this is a known issue with Microsoft Edge’s PDF viewer after recent updates. The disappearing text usually happens because of a bug in the new PDF rendering engine, especially when using the “Add text” or annotation tool. Some users also report problems when pasting text with hidden formatting or special characters. The quickest workaround is to disable the experimental “New PDF Viewer” feature. You can do this by typing edge://flags in the address bar, searching for edge-new-pdf-viewer, and setting it to Disabled, then restart Edge. This often fixes the disappearing text problem. Also, make sure your Edge is updated to the latest version, and if the issue persists, you can temporarily switch to another PDF editor or enable the Adobe-powered PDF reader in Edge settings. Can you confirm which Edge version you’re on and whether you’ve tried disabling the new viewer yet?

It happened after saving. But I never see that problem. I always wrote with the same police, the same size, ... But after the new Microsoft edge update, it happened. I think it can not be solved just by changing some display sttings

Actually, the font or size isn't the problem. A bug from the newest Edge update is causing it. After saving, Edge's PDF engine sometimes drops added text layers. Microsoft knows about it and is working on a fix.

For now, disable the new PDF viewer by going to edge://flags, find edge-new-pdf-viewer, and disable it. Restart Edge. This should bring back the old way it worked. You can also turn on the Adobe PDF extension in Edge or just use a different editor until Microsoft fixes it. The next best action is to disable the new viewer and enalbe the adobe pdf extension.

It s really strange that it happend usually after a update