FUJIFILM X-T5 RAF have problems with Affinity Photo 2.1

As this video shows, when opened in Affinity Photo 2.1, an RAF generated by a Fujifilm X-T5 shows a vertical stripe and a slightly higher resolution.

The problem does not occur if the file is pre-processed with Iridient Transformer and converted to DNG, or if the file is processed with Pixelmator Pro 3, Lightroom Classic or the latest version of Capture One.