Randomly missing arrow heads

[sadata7]

Describe the bug Arrows are missing on the rendered output where a --> relationship is specified. Changing the length of the arrow (e.g. ---> or ------>) makes no difference. It's seemingly unpredictable where the problem will occurs. The screenshot below is a small corner of a 400-element family tree diagram and shows 4 spots where the arrows are missing. I counted about 15 missing overall. I should also point out that the problem seems even worse when 'graph' (straight connectors) is used instead of 'flowchart' (curved connectors). No idea why this would be the case.

To Reproduce The only way to reproduce the behavior is to create a very large graph (about 400 elements) that are fairly evenly distributed. I can't post the family tree as it contains personal data, but I am willing to help debug the issue.

Expected behavior Arrows should be present wherever the --> relationships are shown in the mermaid markup.

Screenshots The red circles below show where arrows are missing where an arrow relationship is specified in the markup:

Desktop (please complete the following information):

• any

Smartphone (please complete the following information):

• any

Additional context Add any other context about the problem here.

[AhmedThahir66]

Same here. Kindly fix it as quickly as possible.

[sidharthv96]

Can you try to reproduce the issue in https://beta.mermaid.live ? We have released a fix for marker ends recently.

Also, please provide a sample data without the personal details for us to recreate the issue.

[sidharthv96]

I used ChatGPT to draw this, and all the arrows are present.

Live Editor Link

graph TD
A[John] --> B[John Jr.]
A --> C[Jane]
D[Mary] -------> E[Mary Jr.]
D --> F[Mike]
B --> G[John III]
B --> H[Jill]
C --> I[Chloe]
C --> J[Chris]
E --> K[Maggie]
E --> L[Martin]
F --> M[Michelle]
F --> N[Mark]
G --> O[Brian]
G -------> P[Blair]
H --> Q[Hannah]
H -------> R[Harold]
I --> S[Sam]
I --> T[Sandra]
J --> U[Justin]
J --> V[Victoria]
K --> W[Kurt]
K --> X[Kate]
L --> Y[Lenny]
L --> Z[Zara]
M --> AA[Amanda]
M --> AB[Aaron]
N --> AC[Nina]
N --> AD[Neil]
O --> AE[Oliver]
O --> AF[Olivia]
P --> AG[Pete]
P --> AH[Patricia]
Q --> AI[Quinn]
Q --> AJ[Qara]
R --> AK[Ryan]
R --> AL[Rebecca]
S --> AM[Steve]
S --> AN[Sharon]
T --> AO[Tim]
T --> AP[Tracy]
U --> AQ[Ulysses]
U --> AR[Uma]
V --> AS[Vince]
V --> AT[Vera]
W --> AU[Warren]
W --> AV[Wanda]
X --> AW[Xander]
X --> AX[Xenia]
Y --> AY[Yannick]
Y --> AZ[Yesenia]
Z --> BA[Zane]
Z --> BB[Zelda]
AA --> BC[Alan]
AA --> BD[Alma]
AB --> BE[Albert]
AB --> BF[Alison]
AC --> BG[Andy]
AC --> BH[Anna]
AD --> BI[Aidan]
AD --> BJ[Aria]
AE --> BK[Arnold]
AE --> BL[Ashley]
AF --> BM[Axel]
AF --> BN[April]
AG --> BO[Adam]
AG --> BP[Amber]
AH --> BQ[Arthur]
AH --> BR[Alice]
AI --> BS[Alec]
AI --> BT[Avery]
AJ --> BU[Andre]
AJ --> BV[Annie]
AK --> BW[Asher]
AK --> BX[Audrey]
AL --> BY[Austin]
AL --> BZ[Autumn]
AM --> CA[Antony]
AM --> CB[Angela]
AN --> CC[Aaron2]
AN --> CD[Angelica]
AO --> CE[Adrian]
AO --> CF[Agnes]
AP --> CG[Abel]
AP --> CH[Ada]
AQ --> CI[Ashton]
AQ --> CJ[Astrid]
AR --> CK[Alfred]
AR --> CL[Alina]
AS --> CM[Alberto]
AS --> CN[Alondra]
AT --> CO[Abraham]
AT --> CP[Adela]
AU --> CQ[Barry]
AU --> CR[Bianca]
AV --> CS[Benson]
AV --> CT[Beatrice]
AW --> CU[Baxter]
AW --> CV[Belle]
AX --> CW[Brendan]
AX --> CX[Blanca]
AY --> CY[Blake]
AY --> CZ[Briana]
AZ --> DA[Brent]
AZ --> DB[Brandy]
BA --> DC[Byron]
BA --> DD[Brynn]
BB --> DE[Bradley]
BB --> DF[Bridget]
BC --> DG[Benito]
BC --> DH[Belinda]
BD --> DI[Barrett]
BD --> DJ[Beulah]
BE --> DK[Boyd]
BE --> DL[Bliss]
BF --> DM[Brock]
BF --> DN[Blair2]
BG --> DO[Bradford]
BG --> DP[Bethany]
BH --> DQ[Bjorn]
BH --> DR[Billie]
BI --> DS[Brice]
BI --> DT[Bryony]
BJ --> DU[Bruno]
BJ --> DV[Bree]
BK --> DW[Brett]
BK --> DX[Britta]
BL --> DY[Brigham]
BL --> DZ[Briony]
BM --> EA[Baldwin]
BM --> EB[Briseis]
BN --> EC[Barron]
BN --> ED[Bristol]
BO --> EE[Basil]
BO --> EF[Bambi]
BP --> EG[Benedict]
BP --> EH[Blanche]
BQ --> EI[Bertram]
BQ --> EJ[Bernice]
BR --> EK[Bertrand]
BR --> EL[Beryl]
BS --> EM[Benson2]
BS --> EN[Bliss2]
BT --> EO[Barclay]
BT --> EP[Blythe]
BU --> EQ[Barney]
BU --> ER[Blaze]
BV --> ES[Brunhild]
BV --> ET[Bayard]
BW --> EU[Benton]
BW --> EV[Briseida]
BX --> EW[Barnaby]
BX --> EX[Britt]
BY --> EY[Beck]
BY --> EZ[Brandy2]
BZ --> FA[Barnard]
BZ --> FB[Brigitta]
AA --> ABC[Alan]
AA --> ABD[Alma]
AB --> ABE[Albert]
AB --> ABF[Alison]
AC --> ABG[Andy]
AC --> ABH[Anna]
AD --> ABI[Aidan]
AD --> ABJ[Aria]
AE --> ABK[Arnold]
AE --> ABL[Ashley]
AF --> ABM[Axel]
AF --> ABN[April]
AG --> ABO[Adam]
AG --> ABP[Amber]
AH --> ABQ[Arthur]
AH --> ABR[Alice]
AI --> ABS[Alec]
AI --> ABT[Avery]
AJ --> ABU[Andre]
AJ --> ABV[Annie]
AK --> ABW[Asher]
AK --> ABX[Audrey]
AL --> ABY[Austin]
AL --> ABZ[Autumn]
AM --> ACA[Antony]
AM --> ACB[Angela]
AN --> ACC[Aaron2]
AN --> ACD[Angelica]
AO --> ACE[Adrian]
AO --> ACF[Agnes]
AP --> ACG[Abel]
AP --> ACH[Ada]
AQ --> ACI[Ashton]
AQ --> ACJ[Astrid]
AR --> ACK[Alfred]
AR --> ACL[Alina]
AS --> ACM[Alberto]
AS --> ACN[Alondra]
AT --> ACO[Abraham]
AT --> ACP[Adela]
AU --> ACQ[Barry]
AU --> ACR[Bianca]
AV --> ACS[Benson]
AV --> ACT[Beatrice]
AW --> ACU[Baxter]
AW --> ACV[Belle]
AX --> ACW[Brendan]
AX --> ACX[Blanca]
AY --> ACY[Blake]
AY --> ACZ[Briana]
AZ --> ADA[Brent]
AZ --> ADB[Brandy]
BA --> ADC[Byron]
BA --> ADD[Brynn]
BB --> ADE[Bradley]
BB --> ADF[Bridget]
BC --> ADG[Benito]
BC --> ADH[Belinda]
BD --> ADI[Barrett]
BD --> ADJ[Beulah]
BE --> ADK[Boyd]
BE --> ADL[Bliss]
BF --> ADM[Brock]
BF --> ADN[Blair2]
BG --> ADO[Bradford]
BG --> ADP[Bethany]
BH --> ADQ[Bjorn]
BH --> ADR[Billie]
BI --> ADS[Brice]
BI --> ADT[Bryony]
BJ --> ADU[Bruno]
BJ --> ADV[Bree]
BK --> ADW[Brett]
BK --> ADX[Britta]
BL --> ADY[Brigham]
BL --> ADZ[Briony]
BM --> AEA[Baldwin]
BM --> AEB[Briseis]
BN --> AEC[Barron]
BN --> AED[Bristol]
BO --> AEE[Basil]
BO --> AEF[Bambi]
BP --> AEG[Benedict]
BP --> AEH[Blanche]
BQ --> AEI[Bertram]
BQ --> AEJ[Bernice]
BR --> AEK[Bertrand]
BR --> AEL[Beryl]
BS --> AEM[Benson2]
BS --> AEN[Bliss2]
BT --> AEO[Barclay]
BT --> AEP[Blythe]
BU --> AEQ[Barney]
BU --> AER[Blaze]
BV --> AES[Brunhild]
BV --> AET[Bayard]
BW --> AEU[Benton]
BW --> AEV[Briseida]
BX --> AEW[Barnaby]
BX --> AEX[Britt]
BY --> AEY[Beck]
BY --> AEZ[Brandy2]
BZ --> AFA[Barnard]
BZ --> AFB[Brigitta]

[anlai46]

This issue is labeled "Close after 30 days" but it is still open. Does this issue still persist?