Clearance problems in 6.99

I have just installed my first 6.99 Nightly with default settings.
I then copied an error free board from 6.07 and opened it - loads of DRC errors and warnings

The first one to look at is in this screenshot

Application: KiCad Schematic Editor (64-bit)

Version: (6.99.0-3551-g58b03b0a1c), release build

Libraries:
wxWidgets 3.2.1
FreeType 2.11.1
HarfBuzz 4.2.0
FontConfig 2.14.0
libcurl/7.83.1-DEV Schannel zlib/1.2.12

Platform: Windows 10 (build 19044), 64-bit edition, 64 bit, Little endian, wxMSW

Build Info:
Date: Sep 23 2022 07:20:35
wxWidgets: 3.2.1 (wchar_t,wx containers)
Boost: 1.79.0
OCC: 7.6.0
Curl: 7.83.1-DEV
ngspice: 37
Compiler: Visual C++ 1929 without C++ ABI

Build settings:
KICAD_SPICE=ON

Did you open the project or just your board? DRC settings and clearances and so on are saved in the project and lead to errors like this if you only open the board file.

The project, I copied the lot, including my local libraries.

edit I tried a simpler project without zones, net-ties etc and the only issue was the revised SOT-23 footprint, which doesn’t allow tracks between the pads

I reduced the pad width from 0.5 mm to 0.42 mm, closer to the 0.4 mm that Analog recommend as according to IPC.
This increases the pad spacing to just over 0.2 mm.
I have other errors, but will post separately

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