On 5.0.0-52.1, Windows (unsure if other client OS effected), pinned messages in rooms with hyperlinks are difficult to click on. When hovering, the mouse will change from hyperlink-clickable to normal guide rapidly. You must bring the mouse to a complete halt in order to click it.
Replicate this by dragging your mouse from the beginning of a hyperlink to the end of it, the mouse should change rapidly. You can only get a constant clickable link by using the space below the hyperlink. This effects all Display size settings.