PDF not rendering correctly

Hello,
two months ago my colleague (xxxxxxxxxxxxxxx) opened a bug-ticket, that a certain pdf is not rendering correctly (attachements: pdf and screenshot of incorrect rendering (black rectangle)).
Your support told him, that you fixed the issue and gave a version with the fix to him (I don't know if he checked your version then and he is not available anymore).

I updated our project now to 3.15.3 and the issue is still present.
I tested with your 3.15.3 Sample and even with the 4.0beta Sample, issue still present.

As we thought the issue is resolved, we planned on rolling out the fix this week. Can you take a quick look? Did something not transfer to production code?

Best regards,
Lukas Hollmann

screenshot of incorrect rendering

Dear user, I was moderating your post: better not to publish private email address on a public forum.
I'll get in touch with you on the trouble ticket platform: it seems that no one from your side was confirming it and the fix (which was a workaround because of some bad encoded PDF never go into production).
I'll ask my colleagues to check.

Dear user,
sorry for delay.

We wasn't able to find the old topic you was referring to, sorry again.
By the way: I invite you to open a new support ticket on www.radaeepdf.com/support referring to this post: me or my colleagues will share with you a fixed version of the native libraries.

Even if we've not received any feedback from your side, we applied the fix on last 3.50 RC2.

thank you, i will check it out!
just for clarification: you changed your releasenumbers? the 3.5RC2 was treated as 4.0 one or two weeks ago, correct?