OpenCPN 5.10 hangs if scrolling too fast with many mbtiles

[SoggyPaws]

I have a lot of little mbtiles (anchorages mostly and some "area" mbtiles) created by Sat2Chart from Sas.Planet. Plus a CM93 chart.
If I am scrolling the screen around to get to a different area, if I move the chart table too fast, the chart table hangs. But the rest of OpenCPN seems to still work (if I click on an icon in the tollbar, it pops whatever screen is associated with that icon). The chart table just stops responding.
If I hover over the piano keys, it will pop the info about each chart, but not hide the info when not hovering (see screen shot of what this looks like).
It is using very little CPU. (.5-1.5%) and some memory (388 MB).
Here is the last bit of the log file when it hung.

18:16:28.434 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\Sendang.mbtiles
18:16:28.450 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:28.450 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\SVE25.mbtiles
18:16:28.450 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:28.450 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\Raas.mbtiles
18:16:28.450 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:28.450 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\PGuiyang.mbtiles
18:16:28.466 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:28.466 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\KangeanAnch.mbtiles
18:16:30.122 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:30.122 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\BIYCmarina.mbtiles
18:16:30.137 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:30.137 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\EnterBoomMarina.mbtiles
18:16:31.231 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\C\02340336.C
18:16:31.278 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\C\02460336.C
18:16:31.543 MESSAGE chartdb.cpp:1169 Creating new chart
18:16:31.543 MESSAGE chartdb.cpp:1284 Initializing Chart C:\Charts\Valhalla\IndonesiaRev41\BoonMarina.mbtiles
18:16:33.496 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\D\02430342.D
18:16:33.512 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\D\02430345.D
18:16:33.543 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\D\02460342.D
18:16:33.574 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\D\02460345.D
18:16:34.871 MESSAGE cm93.cpp:4374 Loading CM93 cell C:\CM93 Oct 2011 Perry\02100300\E\02450345.E
18:16:36.590 WARNING ocpn_app.cpp:959 Caught MainLoopException, continuing...
18:16:59.197 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:18:00.226 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:19:00.916 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:20:01.847 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:21:02.494 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:22:02.875 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:23:03.340 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:24:03.649 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar
18:25:04.016 MESSAGE NavicoLocate.cpp:521 Failed to allocate info from NavicoLocate to a radar

It hung right about 18:16
I do have the Radar plugin (latest version beta I think) installed and enabled, but the radar is powered off and the plugin hasn't been used since I started OpenCPN this morning.
If I kill OpenCPN now, I lose all my tracks and routes since I started out this morning.
When I finally clicked the X-box, I got the spinning wheel for about 30-60 seconds, and then the chart table came back. I didn't have to kill it to have it recover.
Meanwhile, it created a new log file.
I saved the old log file if anyone wants to see it.

[bdbcat]

Sherry....
This is the critical point:

8:16:36.590 WARNING ocpn_app.cpp:959 Caught MainLoopException, continuing...

I'll try to reproduce it.
Related github issue:
https://github.com/OpenCPN/OpenCPN/issues/4124


Thanks
Dave