Originally Posted by jamiegutz

I too just had this issue after just successfully booking 2X TG Biz class redemptions from ARN - BKK - MNL using lifemiles (a miracle in itself, it seems!). An interesting workaround I found is as follows (need to use a chrome browser): Right click on the Title box, select "Inspect"

Developer options will appear on the right side of the screen. Expand that section of the screen until you can see all of the code. Right click on the highlighted code (this is relevant to the greyed out title box), select "Edit attribute", delete the word "Disabled"

Now you can select the correct title from the dropdown.

I just did this and it worked fine and was able to select seats right after.