Debugger unusable anymore due to warnings

[dlfivefifty]

In the last week the debugger (run from the REPL inside VSCode) has stopped being usable. One issue is I constantly get warnings like the following:

1|debug> 
┌ Warning: Tuple{Plots.var"##plot#188", Base.Pairs{Symbol, V, Tuple{Vararg{Symbol, N}}, NamedTuple{names, T}} where {V, N, names, T<:Tuple{Vararg{Any, N}}}, typeof(plot), Vararg{Any}} was not found
└ @ Revise ~/.julia/packages/Revise/t6Vjc/src/packagedef.jl:1111
┌ Warning: Tuple{Plots.var"##plot#188", Base.Pairs{Symbol, V, Tuple{Vararg{Symbol, N}}, NamedTuple{names, T}} where {V, N, names, T<:Tuple{Vararg{Any, N}}}, typeof(plot), Vararg{Any}} was not found
└ @ Revise ~/.julia/packages/Revise/t6Vjc/src/packagedef.jl:1111
┌ Warning: Tuple{Plots.var"##plot#188", Base.Pairs{Symbol, V, Tuple{Vararg{Symbol, N}}, NamedTuple{names, T}} where {V, N, names, T<:Tuple{Vararg{Any, N}}}, typeof(plot), Vararg{Any}} was not found
└ @ Revise ~/.julia/packages/Revise/t6Vjc/src/packagedef.jl:1111

There are a number of other issues: breakpoints being triggered in the wrong function, macros not working, etc.

I don't remember seeing these issues 3–6 months ago so I'm not sure what's changed.