NULL

Please create a separate report for that.

Minecarts with hoppers cannot push items into any containers. They only pull items. This is intended behaviour.

It enlarges the line one pixel to the left if it should draw underlined text

I'm pretty sure this is intentional. Currently, the underline extends 1 pixel left and 1 pixel right of the character, which causes overlap. If they remove the 1 extra pixel on the left, then the underline won't be symmetrical anymore.

Code analysis based on 1.18.2 with yarn mappings.

The easiest way to fix this would be to make net.minecraft.entity.LivingEntity#isClimbing() (or this.onClimbable() in @unknown's analysis) return false if the player is flying. In fact, this method already checks if the entity is in spectator mode. We just need to add a check if the entity is a player and they are flying.

To do this, override that method in net.minecraft.entity.player.PlayerEntity as follows:

@Override
public boolean isClimbing() {
    if (this.abilities.flying) {
        return false;
    }
    return super.isClimbing();
}

Did you name the endermite using a name tag, or with a renamed spawn egg? The latter would be MC-54556 which is intended.

"distance=10" targets entities that are exactly 10 blocks away. You should use "distance=..10" (up to 10 blocks away). The dragon fireball can be killed with the correct command.

For whatever reason, this issue doesn't seem to occur when playing vanilla 1.18.1 on MultiMC. However, it does occur when playing vanilla 1.18.1 on the official launcher.

Maybe it's because MultiMC uses different versions of some libraries? In that case, perhaps bumping the version of some library would fix this bug.

Thank you for your report!
However, this issue is Invalid.

This is related to a different project. Use one of the links below to go to the correct project.
– Minecraft: Java Edition — Windows, macOS, and Linux
– Minecraft Launcher — Bugs about the Minecraft Launcher specifically
– Minecraft (Bedrock codebase) — Android, iOS, Windows 10 (from the Microsoft Store), Xbox, Nintendo Switch, PlayStation, Fire OS, and Gear VR
– Minecraft Dungeons — Action-adventure title set in the Minecraft universe

Please don't forget to search for an existing issue matching yours in the appropriate project before raising a new one.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

Please make sure the bookshelves are placed correctly (1 block gap between the enchantment table and the bookshelves).

Make sure there are no blocks in between, including torches or carpet.

Once you have tried these, please let us know if the problem is solved. If not, please provide screenshots.

Thank you for your report!
However, this issue is Invalid.

This is related to a different project. Use one of the links below to go to the correct project.
– Minecraft: Java Edition — Windows, macOS, and Linux
– Minecraft Launcher — Bugs about the Minecraft Launcher specifically
– Minecraft (Bedrock codebase) — Android, iOS, Windows 10 (from the Microsoft Store), Xbox, Nintendo Switch, PlayStation, Fire OS, and Gear VR
– Minecraft Dungeons — Action-adventure title set in the Minecraft universe

Please don't forget to search for an existing issue matching yours in the appropriate project before raising a new one.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

We do not have enough information to find the cause of this issue.

Please attach the crash report found in [minecraft/crash-reports/crash-<DATE>-client.txt|https://minecrafthopper.net/help/finding-minecraft-data-folder/] here.
If you cannot find a crash report, please attach the full launcher log found in [minecraft/launcher_log.txt|https://minecrafthopper.net/help/finding-minecraft-data-folder/].

_{This issue is being temporarily closed as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.}

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

Please contact Mojang Support for account and purchase problems

This should be reported to the Forge team, not Mojang

Thank you for your report!
However, this issue is Invalid.

This is a technical support issue; this site is for bug reports only. We do not have the resources to provide you with technical support.
Please contact Community Support for assistance and refer to this ticket (e.g. "I have reported this issue on Mojira as MC-XYZ.").

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

JIRA accounts (on this website) and your Mojang/Microsoft account are separate. To play the game, you will need to log in with your Mojang or Microsoft account.

If you are having trouble accessing your account, or any other account-related questions, please contact Mojang Support.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

Please remove any JVM arguments that you have set

Code analysis based on Minecraft 1.17.1 with yarn mappings.

Note that selectionEnd is where the selection initially started, and selectionStart is where the cursor currently is. Since selectionEnd doesn't change when highlighting text, it is not updated:

net.minecraft.client.gui.widget.TextFieldWidget#setCursor(int)

this.setSelectionStart(cursor); // Move the cursor
if (!this.selecting) {
    this.setSelectionEnd(this.selectionStart); // selectionEnd does not need to be updated when selecting
}
...

The problem is that the scrolling logic is handled in setSelectionEnd, so it is skipped while selecting.

To fix this, the scrolling code should be moved to a separate method, and it should be invoked in setCursor even when selecting.

Please contact Community Support for assistance and refer to this ticket (e.g. "I have reported this issue on Mojira as MC-XYZ.").

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

Please make sure you are not using the Programmer Art resource pack in this version

Please take a screenshot in unmodded 1.17 version, with the F3 debug screen enabled.