British Honduras versus Belize bug [solved]

There is a higher level data entry error when it comes to finding British Honduras coins seperately: 

When you search for British Honduras, click on the result ‘Colony of British Honduras’ and next on ‘search’, then you get the old British Honduras coins. When next you click on Belize then the same old coins appear, but not the Belize ones.

When first you click on Belize, then on search, then search for British Honduras and click  ‘Colony of British Honduras’ and next search then again you get both the Belize and the old coins.

This error does not occur when you try the same with Ceylon and Sri Lanka.

As my bug report got both a +1 and a -1 I decided to do additional testing:
I first noticed this to happen on my laptop while being signed in.

I just tested it on my phone while not being signed in, the same bug occurs on my phone as well for British Honduras/Belize, but for Ceylon/Sri Lanka something different happens:

When first I visit Ceylon then I get the Ceylon coins only, when then I try Sri Lanka I still get only the Ceylon coins.
However, when first I try Sri Lanka I get the Ceylon and the Sri Lanka coins, when then I try Ceylon I properly just get the Ceylon coins.

I just tried this on my laptop again, all the same is happening now as on my phone.