I find the auto-complete/auto-correct feature of the site quite a pain, especially when it introduces errors. The abbreviation I.e.
[sic] shouldn't be capitalized if it's used as it is below. I don't recall ever seeing the abbreviation start a new sentence in any of the scholarly texts I've read over the years. Perhaps if it appears as a footnote and not inline you might capitalize it.
Blah blah blah (i.e. blah blah).
For example: https://www.chicagomanualofstyle.org/qanda/data/faq/topics/Abbreviations/faq0047.html
Other style manuals are in agreement here.
i.e.
it changes immediately, automatically, toI.e.