LR Classic constantly logs out

LR Classic has started asking me for login information on an almost hourly basis.  This behaviour is new and seems to have started last week.  It's really frustrating to have to log in so often, particularly when it never used to do this.  It seems to occur when a current network connection is lost, for example, on PC startup, after a sleep, or when using VPNs.  Given that I move from wifi spot to wifi spot regularly, put my laptop to sleep when I'm not using it etc, this constant logging in is tedious, especially as I use a complicated secure password.

Is this a new 'feature' or a bug?

Stephen.

Lightroom Classic version: 7.5 [ 1186149 ]

License: Creative Cloud

Language setting: en

Operating system: Windows 10 - Business Edition

Version: 10.0.16299

Application architecture: x64

System architecture: x64

Logical processor count: 8

Processor speed: 3.5 GHz

Built-in memory: 32695.5 MB

Real memory available to Lightroom: 32695.5 MB

Real memory used by Lightroom: 940.0 MB (2.8%)

Virtual memory used by Lightroom: 791.0 MB

GDI objects count: 619

USER objects count: 1967

Process handles count: 1840

Memory cache size: 106.5MB

Internal Camera Raw revision: 1001

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 79MB / 16347MB (0%)

Camera Raw real memory: 80MB / 32695MB (0%)

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Displays: 1) 1680x1050, 2) 1920x1080

Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:

DirectX: NVIDIA GeForce GTX 1060 6GB (24.21.13.9907)