This seems like a programming error in Cycle-OSM to me. I've flagged a query:

https://github.com/cyclosm/cyclosm-cartocss-style/issues/626

Hi
I'm curious: What do the Odds & Evens refer to?
way/840945937

Apologies, I wasn't paying attention,

Hi
Why have you removed valid data?
If there are better tags to use you should have change, not removed them.

Hi
Please refrain from combining these two tags.
landuse=recreation_ground
leisure=park

They are two different types of objects. They are mutually exclusive.

Is maproulette or your editor suggesting you add both tags or did you just decide yourself?

For the existing objects, what was the original tag? Have you only added recreation ground to existing parks?

Oops.
Thanks for spotting that & letting me know.

Hi
A while ago, but could you clarify what this object is?
Seems too far away from the tracks to be a railway platform.

Hi again.
it's OK, I found out myself.

Hi
To check, in StreetComplete is it a default setting to add ramp=no to steps or did you implicitly add it?

Hi
I presume there are some bollards?

Hi
What form does this fire hydrant take?
Why would the authorities install one right next to a river?
node/9799906911

I undeleted the station node.
All UK railway stations are mapped as nodes, to allow central accurate location.
Railway=stations as an area are generally inaccurate. They overlap rail tracks which aren't publicly accessible. How far beyond the platforms should they be mapped?

it's beneficial to map areas as landuse=railway (OSM-Carto render it the dame colour as railway=station polygons)
As there was already a landuse polygon, I removed the station area.

Hi
If the pub is closed and he disused: prefix is used, the amenity tag should be used.

way/231083595

Hi
These entities already have a valid tag of surface=sand. You added an unnecessary, confusing & duplicating tag of natural=sand. Please don't assume Id validation is accurate. Id developers already removed it for fairways & tees. Unsure why they didn't do it for bunkers.

Hi
When mapping a platform as a closed polygon could you add an area=yes tag as it's required to infill the polygon by several renderers.

As it's the same ref, is local_ref required?

Platforms don't have names. The station's name is on the railway=station node.

Farringdon Elizabeth line is defined as a separate station by National Rail/TfL/ORR.
It has its own CRS code. It is one of ten new stations.

Hi
Is this meant to be a PTv2 stop area?
relation/13426778/history

Hi
Please do not remove area tags from objects that require them.
Platforms require them.

Hi
Welcome to OSM.
I think you need to have a look at this edit.
Double length foot path. Name is not 'Private'.
Has the kissing gate been moved?
Is there a motor vehicle/5-bar gate?

https://osmlab.github.io/changeset-map/#121293119

What is "the navigation application"?