It changes again in the last version (5.4.16.717). Now, the first pair of arrows iterates through non automatic conflicts and it is red until you solve them. So, that's OK (even better than I want to). To disable those button is not necessary now, while it changes color.

So, this suggestion can be closed as resolved.

Since I've added this suggestion, several things have changed. Maybe I should explain this more.

There are two pairs of arrows in a merge window. The first pair is used for browsing through all changed blocks, the second pair iterates just among conflicting changes. In the past the first pair of arrows was blue and the second was red. Furthermore, the second pair was enabled only when there were some conflicting blocks. This had been changed to be always enabled before I added this user voice suggestion. When there is one conflicting block, clicking on the arrow bring you to that. When there is no such block, it does nothing. My suggestion was to disable it in that case.

Since that another change in GUI has happened. The icons has been redrawn and both arrow pairs are blue now. At first it was possible to change icons of the second pair to be red, because internally it was two different icons. I have done that, because I want those arrows to be more distinguishable. However after several releases, this option has been discarded, because it has started to use the same icon internally.

Now, what I wish:
- to be able to change those two icons pairs separately again
- disable the second pair, when there is no conflict