If single line and not all except 1st is numeric, then paste into single cell.

E.g. Copy single line text like “1 2 3 a”, paste to A1. In previous version, it will be pasted to 4 cells. Now, since Origin 2025b, it will be pasted to A1 cell only.

Also, when paste text like “a 1 2 3”, it will still paste to 4 cells like before, as we consider the first word might be a heading.