Identifying faces from the UV map A 3D model I work on seems to create some artifacts from the unwrap function:

These faces in a straight line don't seem to correlate with any faces I have actually wanted to have in the model, but I can't select vertices on the UV map and then see them marked on the main edit window - which makes hunting down these artifacts for removal seemingly impossible. So far I have tried to merge by distance for no result, they seem to be distributed all over the item.
Assuming you have got the Sync Selection button checked:

(The double arrow on the left)
Then, deselect all in the UV window, except the vertex of interest, mouse over the 3D View, and hit Shift H to hide all but your selection. Still no sight? Hit Numpad  .  (period) to center the view on the selection.