REPL auto-completion suggestions may overlie existing text

[jishnub]

julia> versioninfo()
Julia Version 1.11.0-DEV.468
Commit bab20f492a6 (2023-09-14 14:36 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, tigerlake)
  Threads: 1 on 8 virtual cores
Environment:
  LD_LIBRARY_PATH = :/usr/lib/x86_64-linux-gnu/gtk-3.0/modules
  JULIA_EDITOR = subl

Julia binary downloaded using jill.

Suppose I start with

julia> ones(2)

and try to add show( to the beginning of the line. As I type sh, it suggests the auto-completion

The suggested letters ow that are greyed out have overwritten the on of ones. Tab-completing the word then gives me

julia> show

which is super confusing, as the ones is totally removed from the prompt. Incidentally, if I press any key after the tab-completion, it reveals the ones.

Ideally, the ones should always be displayed, and the auto-completion suggestion should shift the existing command to the right as required.

The same behavior is present on the current master

Julia Version 1.11.0-DEV.468
Commit bab20f492a (2023-09-14 14:36 UTC)

Also, the behavior seen here is confusing, where the existing text to the right gets temporarily hidden after I finish typing show:

[jishnub]

Possibly fixed by #51229 (comment)