I always try to keep exposition to a minimum; whenever there is any backstory or worldbuilding, I let it come out via dialogue. The narration is impersonal; I don't want it to feel like someone's telling the story, as I feel like that'd be breaking immersion. The narration is just describing objective things. Emotions are shown. Thoughts are displayed with italicized writing. Intentions and opinions are shown as thoughts or dialogue. Sometimes I tell it, but that's usually when those things are obvious/pre-established, but their relation to the actions happening aren't obvious, so by mentioning them I allow the reader to connect the dots.
However, sometimes it would be practical to describe things that happened kind of outside of the plot. Things that are important, but don't really fit into the story. By having my impersonal, usually non-expository narration suddenly break from the present story, to just fill the reader in on a detail, feels like it'll likely be jarring; because it makes the narration feel like its being delivered by a narrator who exists outside of the story (and thus has access to details not shown in the story), because it deviates from the non-expository paradigm of the story and because it may break the tense.
Usually I write in past tense, but this is still an issue then, given that the story is still now, regardless of the tense. Backstory is still backstory, even if the story is past tense.
For the book I'm writing on now, I decided to try the present tense. I find it fun and challenging, but this issue is even more noticeable now. Especially because this story involves tons of planning and scheming, and to show every itty-bitty detail gets boring, so I like to include tons of time skips. But sometimes, the gist of those details is important to the plot, and it'd be nice if I could simply mention x happened when it becomes relevant. However, is this too jarring?
Do answer as generally as you want, so long as the narration format of present tense 3rd person limited is included.