The bug
The area in which the collision of the player and a block is tested while a player is flying seems to be larger than the hitbox of the player.
The attached screenshot shows the moment in which the game claims the player collided with the wall.
How to reproduce
Use this compacted command
/setblock ~ ~1 ~ standing_sign 8 replace {Text1:"{\"text\":\"Click\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/summon armor_stand ~ ~10 ~ {NoGravity:1b,Tags:[\\\"elytraMarker\\\"]}\"}}",Text2:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/setblock ~ ~4 ~8 sandstone\"}}",Text3:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/replaceitem entity @p slot.armor.chest elytra\"}}",Text4:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/setblock ~ ~ ~ standing_sign 8 replace {Text1:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"1. F3 + B\\\\\\\",\\\\\\\"clickEvent\\\\\\\":{\\\\\\\"action\\\\\\\":\\\\\\\"run_command\\\\\\\",\\\\\\\"value\\\\\\\":\\\\\\\"/tp @p @e[type=armor_stand,tag=elytraMarker,c=1]\\\\\\\"}}\\\",Text2:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"2. F5 (1st)\\\\\\\",\\\\\\\"clickEvent\\\\\\\":{\\\\\\\"action\\\\\\\":\\\\\\\"run_command\\\\\\\",\\\\\\\"value\\\\\\\":\\\\\\\"/tp @p 0 20\\\\\\\"}}\\\",Text3:\\\"[\\\\\\\"3. click again\\\\\\\"]\\\",Text4:\\\"[\\\\\\\"\\\\\\\"]\\\"}\"}}"}After about one second press the space bar to start flying
Linked issues
relates to 1
Attachments
Comments 7
Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.
Cannot reproduce either using the updated command
/setblock ~ ~1 ~ birch_sign{Text1:"{\"text\":\"Click\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/summon armor_stand ~ ~10 ~ {NoGravity:1b,Tags:[\\\"elytraMarker\\\"]}\"}}",Text2:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/setblock ~ ~4 ~8 sandstone\"}}",Text3:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/replaceitem entity @p armor.chest elytra\"}}",Text4:"{\"text\":\"\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/setblock ~ ~ ~ oak_sign{Text1:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"1. F3 + B\\\\\\\",\\\\\\\"clickEvent\\\\\\\":{\\\\\\\"action\\\\\\\":\\\\\\\"run_command\\\\\\\",\\\\\\\"value\\\\\\\":\\\\\\\"/execute at @e[type=armor_stand,tag=elytraMarker,limit=1] run tp @p ~ ~ ~ 0 20\\\\\\\"}}\\\",Text2:\\\"{\\\\\\\"text\\\\\\\":\\\\\\\"2. F5 (1st)\\\\\\\"}\\\",Text3:\\\"[\\\\\\\"3. click again\\\\\\\"]\\\",Text4:\\\"[\\\\\\\"\\\\\\\"]\\\"} replace\"}}"}
Confirmed for 1.9.1-pre2
Due to space activation, the command reproducion doesn't work