Hi ! I don't understand that tones' modification on pictures loaded or reloaded in Lightroom. There seem to be no problem of this kind on Photoshop. The matter persists for so many years now. I use a PC to run the software. Any scheduled update to correct the bug? Is there something that i do wrong? Thanks.
If you re-import photos into Lightroom, the effect of tone curve and any other edits may not be present, and you'd have to re-edit the photos.
This is not a bug. This is the way Lightroom is designed. Better to leave the photos in Lightroom instead of removing the photo from Lightroom and re-importing later, then your edits will not be lost