Created attachment 554 [details]
clear traces area, and obsolete values in hint text
How to reproduce: Have tested CSV file import with mixed signal data in a
local setup. Loading the file after starting the application worked. Then
re-loading the file by pressing Run or SPACE again fails (see bug 1241).
The trace area gets cleared as is to be expected. But the cursor hints at
the right hand side still display obsolete data, and that text updates when
the cursor moves.