All my projects have a couple of metering plugins open and pinned all the time but recently Reaper has started closing those plugins when opening projects.
I have a dual monitor setup and experimented with
FX chain positioning and
Floating fx positioning options as it was driving me nuts that any newly inserted FX would open their windows on the second monitor by default.
At some point I did change the above settings to
modal and then set
General Settings > Advanced UI/System Tweaks to
Center on current screen.
I have since set everything back to
default to no avail. When opening a project Reaper shows the floating FX windows
whilst the splash screen is visible and
closes them when the project is loaded.