In C code, if I have a variable that is a struct, and I type the dot '.' character, I get a list of the members of the struct, and then can use up/down arrow to choose.
But in 126.96.36.199, this list comes up, but if I don't press a key within a second or 2, the list disappears. Similarly, if I press an arrow key, but hesitate to press the arrow key a 2nd time, the list disappears.
I don't remember this being an issue with 19.0.1.