I don't want to criticize any one single comic that does this, only the habit that I keep seeing re-occurring in modern storytelling but especially in comics, manga and web-comics.
Bear in mind, these are issues are mostly present in high concept stories, but occasionally can be seen in other genres, such as action and thrillers.
Talking during fights: instead of actually fighting, two characters decide to talk for 5 pages before they do their first attack.
This is a terrible habit to get into, it sometimes works to trade banter and show character dynamics, but only in very small doses or when it's excused aka, the fight gets interrupted by something.
One the character runs out of bullets, they can use this time to trade insults or talk etc.
A character hides and tries to stealth another character, uses this as an opportunity to talk etc.
Telling instead of showing: I see lot's of fantasy comics start with a whole chapter dedicated to explaining magic systems, history and lore instead of incorporating it naturally into the story.
I appreciate that some comics put this in a separate chapter under the prologue, and by chapter one they start the actual story, but it's still not the best way to illustrate the lore of the world.
A much better way would be to have a character interact with these plot elements naturally, like it is part of their daily routine.
A world where magic exists, show the magic's uses practically, like a merchant using a levitation spell to lift cargo off a ship or better yet, hiring a wizard to do that.
You could even develop that further and make that the first panel of the story. Have it so your main character starts of by doing a chore with magic.
In both those examples, the audience knows already and without having to say a thing, that the world: uses magic, has a practical example of how that magic works and has insight on how magic is used within the story's world.
In the second example, the audience will know that the main character is a magic user and will also have some idea of the character's social standing simply with how they are interacting with the world. Aka: a king wouldn't be doing small scale chores, but a peasant would etc.
Having too much talking and talking for the sake of talking: too much dialogue can work against a scene, if a character says something obvious or is describing something he is doing, as though he is talking directly to the audience, this is completely redundant. Let the audience figure the scene out themselves.
It is especially bad when a character is alone and doing something, but narrating it by talking to themselves for no reason.
I understand this is to avoid silent panels/pages, but this can be easily avoided by simply making the characters think this through a monologue, or alternatively, have the characters give some context to their actions by, revealing the mindset that lead them to do said action.
Characters knowing too much: If a character knows more than they realistically could, or if a character is too OP then the story looses all it's tension and the will feel broken.
There should always be a tangible threat for the character if the story is going to be exciting, and each action should have consequence otherwise it won't feel like the characters are actually a part of the story.
there are still some more problems but these are the main ones I could think of. I'm happy for anyone to add to this list, and will be constantly revising it, whenever I think of something new.
I hope this helps in your creative endeavors,
-Pablo, Author of INTERMINUTE