I have been using Affinity for quite some time now and have never had an issue with this before - it suddenly showed up with the most recent update and persists in all affinity programs - photo, designer and publisher. The issue is that when I export text as curves into PDF, letters like "I" and "l" (L) become thicker than they should be. As far as I know this doesn't mean that it'll be like that when printed, it is simply shown like this in the PDF. Some suggest to disable certain options within their PDF viewers, but this isn't a real solution as certain PDF's are shared among clients and various other people and having to let them know every time "hey, you should disable/enable option X" isn't efficient.
The solution to this issue was finally presented in this very old article : https://www.underconsideration.com/speakup/archives/004301.html
Adding additional anchor points made everything work and show correctly. I have been using the same method all the time within Affinity software as well and it worked perfectly - since the last patch that is. Now, I always get thick lines no matter how many anchor points I add and now matter what option I enable or disable in my viewer. I have even tried adding a very small rounded stroke around the letter i (I) and L (l) to avoid this idea of it being a simply thin rectangle with only 4 anchor points : But it didn't help. Even worse, the letter was even more thick than before! 😱
Since this issue didn't exist prior to the latest patch and it suddenly appeared, I posted it here on the forum in hopes that someone might know what option perhaps needs to be enabled in the new version, or if it actually truly is a bug. I repeat, this isn't just a PDF viewer issue anymore, adding anchor points is completely ignored during export and the resulted exported PDF even loses all added anchor points, which means the following is happening now :
You can open a brand new document in designer
Type anything consisting of letters I, for example "I need this to work"
Convert the text to curves
Add additional anchor points to "I"
Export for print PDF with no rasterization of any type. Check up, just in case, convert text to curves
Open exported PDF in designer again
The letter "I" is not a curve anymore, while everything else is
This could potentially cause problems with printers who deliberately ask for text in curves
This should mean that there seems to exist a new bug during export to PDF. 😭