"Multiple Caption Tracks Enabled"
This is new functionality added as part of the caption translation feature. @Vaibhavi Jani's post here is the only announcement of it. It has been argued for by many users, and this feature alone will be a major advancement.
It changes some of the basic operation of caption tracks. For example, when creating more than one caption track, each new track is enabled by default. Previously, only the new track would be enabled.
When there is no selection of a caption in one of the caption tracks, "Multiple caption tracks enabled" appears in the Captions tab of the Text panel, with a new icon and message. (Screenshot at the end.) There are several keyboard shortcuts for working with Caption Tracks, and some will no longer operate as expected. For example, Activate next/previous caption track.
If a caption in any track is selected, the captions of that track appear in the Text Panel/Captions tab, and that caption appears in the Properties Panel. If you deselect all, the "multiple tracks" message returns.
As noted in the announcement, only one sidecar file can be exported at a time. If using the 3 dot menu to export srt, it appears to be the track showing in the captions tab, whether it is enabled or not. If nothing is selected (the "multiple tracks" message shows in the Captions tab), the export options are greyed out.
If you "export media" and pick burn in, it shows which tracks are being burned in, and these are any that are enabled. If you export and pick sidecar with only one enabled, it uses that track. If you have multiple tracks enabled, it uses the lowest numbered track that is enabled (e.g. C2 over C3). If no tracks are enabled, as expected, Captions in the export settings is greyed out.
As noted in the announcement, you can apply a different style to each track. This means that you can position different tracks to differentiate speakers as well as translations. Many users will be hoping that there are plans to include Speaker information (from the transcript) to Captions.
My tests were using Win10 on Beta v25.2.0.50 and 25.2.0.71.
Stan
 
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