Hello Galaxy Developers.
We have come across an issue that is quite significant to our users.
The Preview mode chunks are duplicating rows when viewing large datasets.
We see duplicate lines in the preview that are not in the dataset when downloaded or used as input to other tools, they seem to be because the chunks used to load large data to the dataset preview overlap by 1 line. (the last in one is the first in the next)
I have an example file that reliably reproduces this issue if you require it. We have tried this on our own instances and on usegalaxy and found the same issue.
I'd appreciate any information you may have on this issue. Kind regards Jo