There are a lot of applications where the startup time of several seconds does not matter at all. More likely, for most applications it does not matter. Of course, if you are FAANG, it does, but you should not optimize for that in the beginning.
Mouse-over over the chart is broken (scrollbar shown and hidden again and again).
I believe you dont need to set x-overflow-auto on the div where the scrollbars appear.
Switzerland has no space for additional "simple roads". It would also be extremely difficult go get it approved, as it would pass through many municipalities. You would have hundreds of objections by residents and probably also a few referendums.
And what if the server is compromised in the future? It is trivially to then extract all the cookies and send them to a attacker-controlled server. The attacker then uses those password to try to login on different platforms.
After initially setting a password, the database/server should only store a salted hash.
Hejlsberg said it multiple times: Most software developers handle exceptions centrally, e.g. around their event loop.
If an API really throws a new exception which can be handled otherwise than displaying "something went wrong", then I dont think its the task of the programming language. This should be in the release notes.
I would be very deeply concerned if Twitch, a multi-billion dollar company owned by Amazon, does not properly hash and salt the passwords of its users.
The official validation apps will not show this detail to the user. Unofficial apps may come up but app stores will probably quickly ban those (they are very careful about the whole COVID topic in the playstores).
There is still the chance of sideloading the app, but one does also need to consider if the vaccination information must really be protected that hard. In most countries, it's more or less randomly when and with what kind of vaccine you got vaccinated. And the really important information in my opinion is: is someone vaccinated or not? And this information is what the bouncer needs to know to let you in...
On most ID cards, there is the full name and the birthdate of the person. So it does not matter if it's on the QR code too. The place of residence is neither on the ID card nor on the QR code.