Constant Power transition not applied in export... sounds fine in timeline

Hello I am using Adobe Premiere Pro 2021 (version 15.4.0 Build 47)

And I have issues with the constant power audio transition not being applied in exports.

Very embarrasssing because I had a "cut" appear  in the final export which I missed to check.

Is there a way to avoid this? It seems to happen with high bitrate exports.. which confuses me a bit.