Arial Narrow Bold: Protected spaces

When I write something in Arial Narrow Bold, protected spaces get more spacing than in other weights of the same font family. I can reproduce this in Pages and TextEdit. Attached a screenshot (everything is Arial Narrow. First two lines Standard, last two line Bold).

Is anyone else experiencing the same issue?

Stept to reproduce:

- Open new document with Pages or TextEdit

- Write something in Arial Narrow Bold and add protected spaces to it

- Write the same in another weight of Arial Narrow and observe