Can you confirm the presence of the “é” in the Character and Glyph table of your font asset as well as it being present in the atlas texture?
What I suspect could be happening is this “é” is not present in your font asset and that in the Editor, we end up using some fallback where in your Android build, the fallback that was used is not included.
It is kind of strange that the character is present in the Character Table but missing from the Glyph Table.
Looking at the character data for “é” we can see its glyph ID is 169. When you search the Glyph Table using this glyph ID of 169, does the glyph show up?
Here is an example of a similar search using a different font.