MC-146163] T-flipflop works inconsistently when build. When copied/pasted with a structure block, working flipflops may become broken and vice versa - Jira
Minecraft - Small T Flip Flop [6 Blocks] - YouTube
2*2*4 T-flip-flop (bedrock/java) : r/redstone
Compact Pistonless T-Flip Flop - YouTube
T-Flip Flop in 17w49a -- It's broken. - Recent Updates and Snapshots - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
How to make a Toggle Switch in Minecraft | by Minecraft & ACNH | Medium