I also have this issue with putting items nested in my bag. Would like to know the fix as well

Think I found a potential fix (works for me)

Need to edit the ItemGrid.lua file on like 612 to this:

if #sessions > 30 then
local session = sessions[1]
table.remove(sessions, 1)
sessions[session.inventory] = nil
end


It's this by default:

if #sessions > 10 then
local session = sessions[1]
table.remove(sessions, 1)
sessions[session.inventory] = nil
end


This might be caused by KIA mods and supporting mods if you're using it