?round - Julia or Jupyter issue?

The following results in an error.

In [1]: ?round

search: round rounding RoundUp RoundDown RoundToZero RoundingMode RoundNearest

MethodError: no method matching latex(::IOContext{Base.GenericIOBuffer{Array{UInt8,1}}}, ::Markdown.HorizontalRule)
The version of the <<Jupyter>> notebook server is: 5.7.0
The server is running on this version of Python:
Python 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)]

Current Kernel: <<Julia 1.0.1 (2018-09-29)>>

Typing ?round in the Julia REPL works as expected.

The error only occurs in a Jupyter notebook, but the error message looks like a Julia error message.
Should I open a Julia issue or a Jupyter issue?

That issue is fixed, so you should be able to solve it by pkg> up IJulia.

@fredrikekre Fix confirmed. Thank you.