Incorrect "File aspect ratio" image rotation during Slideshow

[Agent-0808]

Checklist

• I can reproduce the bug with the latest version given here.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected app version

1.13.0

Affected Android/Custom ROM version

HyperOS 2.0.215.0 (Android 15)

Affected device model

Xiaomi Mi 14

How did you install the app?

Google Play Store

Steps to reproduce the bug

1. Go to Settings -> Full screen.
2. Set Screen rotation to "Based on file aspect ratio" (or "File aspect ratio").
3. Open an album containing images with different aspect ratios (mixed portrait and landscape).
4. Start a Slideshow.
5. Observe the screen orientation as the slideshow automatically transitions between images.

Expected behavior

The screen should rotate according to the aspect ratio of the image currently being displayed in the slideshow.

Actual behavior

The rotation lags by one image during automatic transitions. The current image adopts the orientation that matches the previous image's aspect ratio.
Note: This issue only occurs during the automatic slideshow transition. If I manually swipe to switch images, the rotation works correctly.

Screenshots/Screen recordings

No response

Additional information

Possible cause: It suspects that there is a timing/sequence issue between the slideshow transition event and the retrieval of the file's aspect ratio.